OS Series 12 Optimum Time Watch

⏱️ Visible timing with simultaneous display of time and timer
⌚ Quick reading thanks to the 19 mm digits for the last seconds
💧 Marine use with 5 ATM waterproof and shockproof construction
🔋 USB rechargeable battery for repeated use on board
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OS SERIES 12 OPTIMUM TIME WATCH: A COMPACT WRIST WATCH WITH CHRONOMETER
The OS Series 12 Optimum Time Watch is a nautical chronometer watch designed for precise time tracking and start phase monitoring in sailing. Its compact 28 mm screen and 3-line display allow simultaneous viewing of time and timer, directly on the wrist.
Inspired by the features of the 14R series, the OS Series 12 Optimum Time Watch is distinguished by its black ABS case and removable silicone strap offering stable support. The 19 mm digits for the last 59 seconds ensure quick reading during maneuvers, while the electroluminescent backlight facilitates use in low light conditions.
This watch is water resistant to 5 ATM and features a shockproof structure. Its USB rechargeable battery limits the use of batteries and ensures regular use on board. It meets the needs of precise timekeeping in sailing, training or regatta.
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Technical specifications
- Nautical stopwatch watch – OS 12 series
- 28 mm screen – 39 mm reading area
- 3-line display with 9 mm digits
- 19 mm digits for the last 59 seconds
- Black ABS case – removable silicone strap
- Polished stainless steel buckle
- 5 ATM water resistance – shockproof construction
- Electroluminescent backlight
- USB rechargeable battery (cable included)





























