The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Some links on this page are affiliate links: if you buy through them we may earn a commission, at no extra cost to you.
Casio’s MDV-107D aluminum-bezel watches are suitable for swimming when the case, crown, crystal and seals are in good condition. Casio rates the MDV-107D-1A2V and MDV-107D-3A2V at 200 meters (20 bar), and its water-resistance table allows swimming for a 20-bar watch. Scuba diving is different: Casio says only a watch marked “DIVER’S WATCH 200M” can be worn with air tanks. Therefore, a product page that says “200 m,” or an aluminum bezel that looks like a professional dive bezel, is not by itself proof that an MDV-107D is approved for scuba. Check the exact caseback and model manual before taking it under with scuba equipment.
Can I swim with a Casio MDV-107D?
Yes. Casio’s current specifications for the MDV-107D-1A2V and MDV-107D-3A2V list 200-meter water resistance (20 bar), and Casio’s general water-resistance table permits swimming for watches rated at 20 bar. That answer assumes the watch is genuine, has not been damaged, and its seals are still serviceable.
As an Amazon Associate I earn from qualifying purchases.
What the MDV-107D specifications actually say
| Model | Case and bezel | Water resistance | Construction and timing features | Published dimensions and weight |
|---|---|---|---|---|
| MDV-107D-1A2V | Stainless steel case with aluminum bezel | 200 m (20 bar) | Screw-lock back; anti-reverse bezel; mineral glass | Approximately 49.5 × 46.3 × 12.1 mm; 144 g |
| MDV-107D-3A2V | Stainless steel case with aluminum bezel | 200 m (20 bar) | Screw-lock back; anti-reverse bezel | Not stated on the cited product page |
Casio describes these models as intended for ocean sports or marine activities. That description supports ordinary water use, but it does not override Casio’s separate rule for scuba watches. The 200-meter figure is the manufacturer’s stated water-resistance rating, not an independent failure-rate or dive-incident statistic; no such statistic is published in the official material cited for these models.
What 20 bar means for a swimmer
Casio’s table treats 20-bar (200-meter) water resistance as adequate for swimming, snorkeling and jet skiing. It is therefore appropriate for pool laps, surface swimming and normal exposure to waves, provided the watch has been maintained and the crown and other controls remain closed. The rating does not make every 200-meter Casio a scuba instrument.
Popular on Amazon
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Why doesn’t a 200-meter rating automatically make the watch scuba-safe?
Because Casio distinguishes a general water-resistance rating from a diver’s designation. Its explicit instruction is: “Only watches marked with the words ‘DIVER’S WATCH 200M’ can be worn while scuba diving (with air tanks).” A dial, caseback or manual that lacks that exact designation should not be treated as approval for air-tank diving, even if a product page lists 200 meters.
Casio’s activity table
| Marking or rating | Swimming | Snorkeling | Jet skiing | Scuba with air tanks |
|---|---|---|---|---|
| 50 m | Allowed | Not allowed | Not stated as allowed in the cited table | Not allowed |
| 100 m | Allowed | Allowed | Not stated as allowed in the cited table | Not allowed |
| 200 m under the ordinary water-resistance table | Allowed | Allowed | Allowed | Not allowed under the ordinary table |
| Marked “DIVER’S WATCH 200M” | Allowed within the marked depth and manual instructions | Allowed within the marked depth and manual instructions | Follow the model manual | Identified by Casio as suitable within the marked depth |
This distinction explains why “200 m” and “DIVER’S WATCH 200M” must not be used interchangeably. Casio’s diver-watch precautions allow a properly marked diver’s watch for skin diving and scuba within the depth printed on it, while deeper mixed-gas diving is excluded. The MDV-107D product pages’ marine-activity language is therefore not a substitute for checking the physical marking.
PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchDoes an aluminum bezel make a Casio watch dive-ready?
No. Aluminum is a material specification, not a scuba certification. The MDV-107D’s aluminum bezel can provide the familiar rotating timing scale associated with dive-style watches, but Casio’s water-use decision depends on the complete watch: its designation, case, crown, caseback, seals, condition and model-specific instructions.
Which construction details matter more than bezel color or material?
- Exact caseback wording: Look for the words “DIVER’S WATCH 200M” if you intend to use air tanks. A generic “200 m” or “20 bar” marking does not establish scuba approval under Casio’s table.
- Case and crown security: The MDV-107D pages specify a screw-lock back. Related MDV-106B-2AV and MDV-106B-1A2V pages also list a screw-down crown and screw-lock caseback, but those construction details still do not replace the diver designation.
- Bezel direction: The MDV-107D pages specify an anti-reverse bezel. The related MDV-106 pages specify a unidirectional diver’s bezel. Direction and timing function are useful design features, but neither one alone grants permission for scuba.
- Seal condition: A watch can lose water resistance as gaskets age or after the case, crystal or crown is damaged. The printed rating describes the model when its sealing system is intact.
- Manual instructions: The manual for the exact reference controls when its guidance is more specific than a general product description.
How do I check an MDV-107D before taking it into water?
Use the following check before a planned swim, snorkeling trip or dive. It separates an ordinary water-use decision from the stricter scuba decision.
Also popular on Amazon
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
- Identify the complete reference. Confirm whether the watch is an MDV-107D-1A2V, MDV-107D-3A2V or another reference. Similar styling does not prove identical instructions.
- Read the caseback, not only the listing. Photograph or transcribe the water-resistance wording. For scuba with air tanks, Casio’s required wording is “DIVER’S WATCH 200M.” If that phrase is absent, do not use the watch for scuba.
- Read the model manual. Check the stated activities, maximum marked depth and any restrictions on the crown, buttons, bezel or strap. Use the model-specific instruction when it is narrower than a general 200-meter description.
- Inspect the sealing points. Look for a cracked or chipped crystal, a damaged case, a loose or damaged crown, a deteriorated band and signs that the caseback has been opened improperly. Any visible defect is a reason to keep the watch dry until it has been assessed.
- Consider service history. Casio advises periodic gasket replacement by a trained technician. Its materials cite approximately two years in one diver-watch manual and approximately two to three years in another general precaution page, so treat those as maintenance guidance rather than a universal expiration date.
- Close everything before exposure. Ensure the crown is fully secured according to the manual. Never operate the crown or buttons while the watch is wet or submerged.
- Rinse after salt water. After seawater exposure, rinse the watch with plain fresh water to remove salt and dirt, then dry it without manipulating wet controls.
What activities can an ordinary 200-meter MDV-107D handle?
Swimming
Swimming is the clearest approved use under Casio’s 20-bar table. Pool swimming and surface swimming in the sea fall within that category when the watch is in good condition and its controls remain closed.
Snorkeling and surface exploration
Casio’s table allows snorkeling for a 200-meter watch. Snorkeling here means remaining at the surface or making shallow breath-hold descents, not using an air tank. Follow the manual if it imposes a narrower restriction.
Free tools Windows power users keep installed
One-click scans. No signup required.
Jet skiing and similar surface sports
Casio lists jet skiing among the activities allowed for a 200-meter watch in its ordinary table. High-impact water sports still justify a condition check because a damaged crystal, crown or case can compromise sealing.
Scuba diving with an air tank
Do not infer approval from the MDV-107D’s 200-meter product rating. Use an MDV-107D for scuba only if the exact watch is marked “DIVER’S WATCH 200M” and its manual and maintenance condition support that use; otherwise choose a watch that carries Casio’s diver designation.
Also popular on Amazon
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Mixed-gas and deeper technical diving
Casio’s diver-watch precautions distinguish ordinary scuba from deeper mixed-gas diving. Even a watch marked “DIVER’S WATCH 200M” is limited to the depth and use stated on it; the cited guidance excludes deeper mixed-gas diving.
How does the MDV-107D compare with the related MDV-106?
The MDV-106 comparison is useful for identifying which features are relevant, but visual similarity or a diver-style bezel is not enough to change Casio’s scuba rule.
| Feature | MDV-107D-1A2V / MDV-107D-3A2V | MDV-106B-2AV / MDV-106B-1A2V | Why it matters |
|---|---|---|---|
| Stated water resistance | 200 m | 200 m | Supports the same general surface-activity rating; does not alone establish scuba approval |
| Bezel | Anti-reverse; aluminum bezel listed | Unidirectional diver’s bezel | Controls elapsed-time timing; bezel style is not the scuba designation |
| Caseback | Screw-lock back | Screw-lock caseback | Part of the sealing system |
| Crown | Not specified in the cited MDV-107D product details | Screw-down crown listed | A construction detail to verify on the exact reference |
| Scuba decision | Check for “DIVER’S WATCH 200M” and the manual | Check for “DIVER’S WATCH 200M” and the manual | Exact marking and instructions take priority over styling |
For either family, the practical checks are the same: exact caseback designation, stated pressure rating, crown and caseback construction, bezel function, gasket age and the manual. Dial color, bezel finish and the fact that a model resembles a diver watch are secondary.
What maintenance protects water resistance?
Water resistance is a condition that must be maintained, not a permanent lifetime guarantee. Casio’s precautions call for periodic gasket replacement by a trained technician; the cited materials give roughly two years in one diver-watch manual and roughly two to three years in another general guidance page. The interval can vary with the model, use and service conditions, so use the exact manual and an authorized or otherwise trained service professional for the watch’s reference.
Also popular on Amazon
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Widely Compatible: Transform any USB-C port into a USB-A port and USB-A port into a USB-C port, and connect up a wide range of USB-C(including MacBook, iPad Pro/Air/Mini, iPhone models with USB C ports, Samsung Galaxy series, and Google Pixel series. ) and USB A devices(including external hard drives, phones, mice, printers, and more)
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
- Keep the crown and buttons untouched while the watch is wet or submerged.
- Rinse salt and dirt away with plain fresh water after seawater exposure.
- Have the case, crystal, crown and seals inspected if the watch has suffered an impact, shows condensation or has been opened.
- Replace gaskets periodically rather than waiting for visible leakage.
- Do not treat a new strap, bezel insert or crystal as proof that the pressure seals were serviced.
If condensation appears under the crystal, stop using the watch in water and arrange service. Moisture inside the case is a warning that the sealing system may already have failed; continued swimming can worsen movement and dial damage.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should you verify when buying an aluminum-bezel MDV-107D?
Use the complete phrase “Casio MDV-107D 200M aluminum-bezel diver watch” to identify the physical product, then verify the exact reference against Casio’s product information. Check that the seller’s photographs show the same dial, caseback and reference as the listing, because a generic 200-meter description can conceal a different model. Marketplace seller authorization, stock and any listing identifier must be confirmed at the time of purchase; they are not established by Casio’s product specifications.
For a watch intended only for swimming or snorkeling, the MDV-107D’s stated 200-meter rating, screw-lock back and anti-reverse bezel are relevant specifications. For scuba, make the caseback wording and manual the deciding evidence. If either cannot be verified, treat the watch as a surface-water watch rather than a tank-diving instrument.
What is the practical verdict for swimmers and divers?
An MDV-107D in sound condition is a reasonable choice for swimming, snorkeling and the other surface activities Casio lists for a 20-bar watch. Its aluminum bezel is a construction detail, not a certification. Scuba requires the exact “DIVER’S WATCH 200M” marking, compliance with the model manual and seals maintained by appropriate service; a plain 200-meter listing is not enough.
Also popular on Amazon
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Frequently Asked Questions
Can I wear a Casio MDV-107D in a chlorinated pool?
Casio’s 20-bar table permits swimming, which includes ordinary pool use when the watch is intact and the crown and controls are secured. Rinse the case with plain fresh water afterward so residue does not remain around the case and bezel.
Is snorkeling with an MDV-107D different from scuba diving?
Yes. Casio lists snorkeling as an allowed activity for a 200-meter watch, while its scuba rule requires the separate “DIVER’S WATCH 200M” marking. Snorkeling in this context does not mean descending with an air tank.
What does an anti-reverse bezel do on the MDV-107D?
It is designed to turn in only one direction, so an accidental movement can reduce the indicated elapsed time rather than increase it. That timing behavior is useful for dive-style use, but it does not establish that the watch is approved for scuba.
Can a gasket replacement restore an old watch’s water resistance?
A trained technician can replace aging gaskets and inspect the sealing system, but service is not a guarantee that a damaged crystal, case or crown is safe. Have the complete watch assessed and follow the exact reference’s instructions before returning it to water.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
