Free tools Windows power users keep installed
One-click scans. No signup required.
If you want a smaller, lighter diver on the published specifications, the Citizen Promaster NY0040-09EC is the more likely fit on paper. If you value the Seiko’s listed day/date display, wider strap, or the manufacturer’s explicit ISO scuba statement, consider the Seiko Prospex Turtle SRPE93. These are specific references, not claims about every Turtle or NY0040 variant.
The comparison below uses Seiko’s U.S. SRPE93 specifications and Citizen Watch Europe’s NY0040-09EC product page. Specifications can vary by reference, market, and revision.
As an Amazon Associate I earn from qualifying purchases.
How do the SRPE93 and NY0040-09EC compare?
The most concrete difference in the published specifications is size and weight. Seiko lists the SRPE93 at 45.0 mm in diameter, 13.4 mm thick, and 124 g. Citizen lists the NY0040-09EC at 42 mm in diameter, 12 mm in “Height,” and 94 g. Those numbers suggest a smaller, lighter Citizen, but they do not establish how either watch will feel on a particular wrist.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →| Specification | Seiko Prospex Turtle SRPE93 | Citizen Promaster NY0040-09EC |
|---|---|---|
| Movement | 4R36 automatic with manual winding | Caliber 8204 mechanical automatic |
| Published power reserve | Approximately 41 hours | 42 hours |
| Listed functions | Stop seconds; day/date | Calendar functions are not clearly listed on the cited product page |
| Diameter | 45.0 mm | 42 mm |
| Thickness / height | 13.4 mm thick | 12 mm listed height |
| Weight | 124.0 g | 94 g |
| Crystal | Hardlex | “Crystal glass” |
| Supplied strap | Silicone | Urethane |
| Lug width | 22 mm | 20 mm |
| Water-resistance wording | 200 m / 660 ft diver’s | 20 bar |
| Other stated diver features | Unidirectional bezel, screw-down crown, screw case back | Unidirectional bezel, screwed crown and case back |
Specifications in the table are from the Seiko SRPE93 page and Citizen NY0040-09EC page. Citizen calls its 12 mm measurement “Height”; the table preserves that wording rather than assuming the measurement is defined identically to Seiko’s thickness.
#1 Best Overall
- 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.
Which watch is more likely to suit your wrist?
Start with the listed dimensions, then consider your wrist shape and how you prefer a watch to sit. The Citizen’s 3 mm smaller diameter, 1.4 mm lower listed height, and 30 g lower weight point toward less wrist presence on paper. The Seiko’s larger figures may appeal if you want a more substantial-looking watch.
These are manufacturer measurements, not a fit test. Case shape, strap articulation, and individual wrist proportions affect wear, and the specifications do not establish which model is more comfortable. If possible, try the exact reference on your wrist before deciding.
Rank #2
- 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.
What do the movements and functions tell you?
Seiko identifies the SRPE93’s movement as the 4R36, an automatic movement with manual winding, and lists stop seconds and a day/date display. Its stated reserve is approximately 41 hours. Citizen identifies caliber 8204 for the NY0040-09EC and gives a 42-hour reserve, but its cited product page does not clearly list calendar functions. Do not assume the Citizen variant has a particular day/date arrangement from this page alone; check the manual for the exact reference if that function matters to you.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesThe published reserve figures are close, but they do not show how accurately either watch will keep time in your use. The specification pages also do not establish a real-world accuracy winner.
Rank #3
- 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.
How should you interpret their diving ratings?
Seiko lists the SRPE93 as 200 m / 660 ft diver’s. Seiko USA also states that this specific model “follows ISO standards for scuba diving at depths of up to 200 meters.” That statement appears in Seiko USA’s SRPE93 product description and applies to the SRPE93.
Citizen lists 20 bar for the NY0040-09EC. That is the water-resistance wording on the cited European product page; the page reviewed does not make an equivalent ISO scuba certification statement. Keep the distinction clear rather than treating the two descriptions as proof of identical certification.
Rank #4
- 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
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- 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
Does the strap difference matter?
The SRPE93 comes with a silicone strap and has 22 mm lugs; the NY0040-09EC comes with a urethane strap and has 20 mm lugs. If you plan to use a replacement, match the width to the exact watch as a starting point. Width alone does not guarantee that a strap’s ends, shape, or hardware will fit properly.
Recommended Free Tools
How should price and availability affect the choice?
Use listings for the exact reference in your own region and compare the full purchase terms at the time you shop. The Seiko U.S. page displayed USD 525, while the Citizen source is a European regional page; those figures and regions do not provide a fair current price comparison. Prices and availability can change.
Best Value
- 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.
Which one should you choose?
- Lean toward the Citizen NY0040-09EC if its smaller diameter, lower listed height, and lighter weight are priorities for you.
- Lean toward the Seiko SRPE93 if you want the listed day/date functions, prefer a 22 mm strap width, or value the explicit Seiko USA ISO scuba statement for this reference.
- Try both before choosing if wrist comfort, timekeeping performance, lume, or bezel feel will decide it. The cited product specifications do not establish a winner on those points.
Neither is an objectively better choice from these specifications alone: match the exact model’s documented features to your priorities, and treat fit and real-world performance as questions the product pages cannot answer.
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.
