Recommended Free Tools
The Bohen Mille-Mer pairs a manufacturer-rated 1,000 m depth capability with a distinctive internal date magnifier suspended beneath its domed sapphire crystal. Its headline engineering is concrete: a crown at 12 o’clock, a helium escape valve and a 60-click ceramic bezel. The trade-offs are equally important for a buyer: Bohen specifies a 43 mm bezel and 17.5 mm height including the dome, and its current listings show limited stock. The specifications below are Bohen’s; no independent depth test or hands-on assessment is established here.
What makes the Mille-Mer different?
An internal date magnifier under the dome
The most unusual design feature is the date magnifier inside the crystal, held between the sapphire and the hands by two bridges. Bohen says the bridges solve a practical problem: a magnifier cannot be attached to a domed crystal in the usual way. This places the date lens within the watch rather than on the crystal’s outer surface. The brand presents it as a central innovation; the construction is a design distinction, not proof of better performance.
Bohen’s blue-dial specification page also describes the sapphire as double-coated on the inside. The case is specified as SS316L steel, with a grade 5 titanium caseback. Bohen’s blue Mille-Mer specification gives the full construction details.
Purpose-built dive-watch features
Bohen lists a 60-click ceramic rotating bezel, helium escape valve and crown at 12 o’clock. Those details signal a tool-watch brief, but the published depth rating should be read as a manufacturer specification: the reviewed sources do not establish an independent depth-test report or formal certification.
#1 Best Overall
- 【Divers Watches for Men Women】- Scuba Diving & Swimming Accessories Computer Watch for Swimmers Divers Sailing Surf Hiking equipped with more Professional Multifunctions, such as Self-Contained Underwater Breathing Apparatus Dive; No Decompression Limit Time; Safety Factor; Free Dive; Compass; Altimeter; Barometer; 100M Waterproof
- 【Scuba Diving Watch】- This is a powerful professional diving watch, Before scuba dive we need to set safety factor and oxygen content, calibrate compass. You could also wearing it for outdoor sports, such as go hiking ,mountain climbing ,go fishing ,go camping
- 【10ATM Water Resistant】 The reliable sealing system of the digital watch offers effective protection against water, dust and external influences. With 10 ATM water resistant, the watch can be worn when swimming, snorkeling, scuba diving and other sports activities which your watch might get wet.
- 【Survival Hiking Reloj Deportivo】- Compass Digital Sports Watch , accurately pinpoint direction to safely find your way through wilderness and in whiteout conditions；Altimeter , kown the distance from the top/foot of the mountain；Barometer , know real-time air pressure
- 【Good Materials】- The watchcase is made by 316L stainless steel which is corrosion resistant ,Shockproof and durable, Tough,scratch-resistant glass with high light transmission
The crown position is an uncommon visual choice. Whether it is more comfortable depends on the wearer and wrist; the available evidence does not establish a wearability advantage.
Size, materials and changing the strap
Bohen gives the Mille-Mer a 43 mm rotating-bezel diameter and 50 mm length. Height is 15.9 mm excluding the sapphire dome and 17.5 mm including it. The strap width is 24 mm. These are manufacturer figures rather than independently measured dimensions, and the 17.5 mm overall height is worth considering if a watch needs to fit beneath a close-fitting cuff.
The manufacturer lists a steel bracelet with an integrated universal link, an included silicone strap and a micro-adjustable buckle. It also says bracelet and strap changes can be made without tools. The page does not identify a third-party replacement strap model, so check fit and compatibility with Bohen before buying an alternative.
Rank #2
- 1.Dive Computer Modes.Built for recreational scuba diving with Air, Nitrox, and Gauge modes. Displays NDL time, depth, water temperature, dive speed, current time, and compass direction for easy underwater reading.
- 2.Scuba & Free Dive Tracking.Supports scuba diving and free diving modes, with depth display up to 50m / 164ft and 99 dive log records. Suitable for beginner and recreational divers who need essential dive data on the wrist.
- 3.100M Water Resistance.Designed with 100M water resistance for scuba diving, snorkeling, swimming, and water sports. The stainless steel case and silicone strap provide a secure, durable fit in wet conditions.
- 4.Outdoor ABC Functions.More than a dive watch: includes digital compass, altimeter, barometer, thermometer, pedometer, stopwatch, countdown timer, alarm, 12/24H time, and backlight for hiking, camping, and outdoor use.
- 5. Large Digital Display.Large high-contrast digital screen makes key information easy to read. Before diving, please set the correct mode, safety factor, oxygen content, and calibrate the compass according to the manual.
Movement and stated performance
Bohen describes the movement as an automatic Swiss movement designed by Soprod and modified for the brand. Its published specification is 42 hours of power reserve, 25 jewels and a rate of 28,800 beats per hour (4 Hz). The listed functions are hours, minutes, seconds and date.
Outdated 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 matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallBohen states that the movement is adjusted to +/- 4 seconds per day across five positions. That is the manufacturer’s stated adjustment, not a result from an independent accuracy test. Other listed details include antimagnetic construction, Incabloc shock protection, a Glucydur balance, rhodium treatment, a Côtes de Genève rotor and pearled bridges. The product page does not establish service pricing, service intervals or a named service network.
Water resistance and lume: what the claims mean
Bohen rates the Mille-Mer at 100 ATM, 1,000 m or 3,300 ft. Those are the manufacturer’s stated equivalents; the reviewed sources do not provide an independent test report. A high published rating alone does not establish suitability for a particular dive, so buyers who intend to use the watch underwater should confirm the manufacturer’s operating and maintenance guidance.
Rank #3
- Solar-Powered – Charges efficiently under sunlight or indoor light; no battery replacement needed for years. Fully charged, it runs up to 6 months in total darkness.
- 300M (1000FT) Professional Dive Watch – Designed for serious divers, swimming, snorkeling, and water sports. Superior water resistance
- Durable 316L Stainless Steel – Features a 45.8mm solid 316L steel case & bracelet (24mm width) for extreme durability. Scratch-resistant and corrosion-proof.-（With 1 set silicone spare strap）
- Reliable Quartz Movement – High-precision Japanese quartz movement ensures accurate timekeeping.
- Long-Lasting Battery – Equipped with a Maxell ML2016 rechargeable battery (replaceable after years of use). Weight: 131g (0.29LB) – Sturdy yet comfortable.
Bohen also claims its Super-LumiNova X1 markers are 50% more powerful and last twice as long as markers from other brands. The product pages do not provide a comparison method or test conditions, so treat those figures as brand claims rather than independently demonstrated results.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price, editions and current availability
As checked on October 7, 2026, Bohen’s collection listing priced each dial at €3,590 including tax. That page marked the black dial, listed as a 500-piece edition, out of stock; blue and grey, each listed as an 80-piece edition, were marked “last pieces.” These edition quantities describe the stated editions, not verified production totals or remaining inventory. The collection page is the relevant source for those variant statuses.
A separate Bohen product listing also showed €3,590 including VAT but marked the watch unavailable. The variant and inventory records may differ, so confirm the exact dial and availability with the manufacturer before placing an order: Bohen’s separate Mille-Mer product listing.
Rank #4
- 10 ATM water resistant, support 100m underwater operation, great for swimming, snorkeling, scuba diving and other water activities.
- Support stopwatch, timer count down, Alarm clock, and hourly chime functions.
- Support month, date, week day check.
- Support dual time zone display, 12/24 hour format selectable.
- Electro luminescent backlight built-in, support time check in the darkness. Note: The battery can be replaced. If you find that the watch is not working or the text on the display is not clear, please replace the watch battery in time.
For context only, WatchTested reported an initial price of €1,659 in its September 11, 2021 launch coverage. That is a historical launch-era figure, not a current offer, and the available information does not establish that it is directly comparable to today’s tax-inclusive listing. The same article reproduced founder Blaise-Dominique Giuliani’s description of the watch as a “high-tech tool”; this is a secondary-source quotation, not a verified primary interview transcript. WatchTested’s 2021 report provides that launch context.
How to assess it against another dive watch
The Mille-Mer’s design is distinctive, but the available information does not support ranking it against competing watches or calling it better value. Compare like with like on the points that affect ownership:
- Fit: Compare the 43 mm bezel diameter, 50 mm length and 17.5 mm height including dome with the dimensions of other watches you can wear comfortably.
- Depth rating: Check whether the other manufacturer’s rating, like Bohen’s, is a published specification or backed by documentation of independent testing.
- Movement: Weigh the stated reserve, regulation and specifications alongside practical service access and cost, which are not established on the Mille-Mer pages cited here.
- Bracelet and straps: Compare clasp adjustment and how readily you can change straps; confirm compatibility before buying non-Bohen replacements.
- Ownership terms: Check current price, warranty, stock and after-sales access for the exact variant. The cited Bohen pages do not state warranty terms.
A 2024 Présent Magazine feature identifies Giuliani as Bohen’s founder and discusses the internal date magnifier as the Mille-Mer’s innovation. It offers context on the brand’s emphasis on detail and finishing, rather than independent evidence that the watch outperforms alternatives. Read the 2024 Présent Magazine feature.
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.
