OS3 sailing watch - blue

Join thousands of sailors who trust the famous Optimum Time OS3—the “Big Yellow Timer” that defines racing precision. This iconic sailing watch is built for those who live for the starting line. Its rotating display, huge digits, and tactile buttons give you instant control when seconds matter most. Lightweight yet durable, the OS3 can be worn over your sailing gear or attached to the mast. The water-resistant, shockproof ABS case and electro-luminescent backlight make it perfect for any race condition. With programmable ISAF start sequences, countdown & repeat modes, and the signature sync button, the OS3 ensures you’ll never miss the gun. Reliable. Visible. Legendary. Features: - 65mm diameter ABS case - 38mm x 20mm display - single row display with 16mm digit height - adjustable viewing angle - boom/mast mount bracket supplied - adjustable elasticated strap - water-resistant to 5 ATM - shock resistant construction- electro-luminescent backlight feature Timer functions: - normal timekeeping mode (12 or 24 Hours) - pre-programmed 5,4,1,0 ISAF start sequences or 5 min, 3 min, and 1 min programs with audible alarms (can be silenced if preferred) - countdown & repeat or countdown and up - sync button for instant synchronisation if a gun is missed - count-up from zero

The original and iconic ‘big yellow timer’ is still the top choice for competitors around the world today. If you need a robust timer, with an easy-to-read display, and exceptional sailing functionality, then this is the one for you. The OS3 can be strapped to a mast or comfortably worn over your sailing kit. The face rotates to give you the best viewing angle and the big buttons mean you won’t be left fumbling when the race is about to begin. The OS3 also features our essential sync button, which synchronises your countdown to the race control timer, ensuring you won’t miss the gun.Features:- 65mm diameter ABS case- 38mm x 20mm display- single row display with 16mm digit height- adjustable viewing angle- boom/mast mount bracket supplied- adjustable elasticated strap- water-resistant to 5 ATM- shock resistant construction- electro-luminescent backlight featureTimer functions:- normal timekeeping mode (12 or 24 Hours)- pre-programmed 5,4,1,0 ISAF start sequences or 5 min, 3 min, and 1 min programs with audible alarms (can be silenced if preferred)- countdown & repeat or countdown and up- sync button for instant synchronisation if a gun is missed- count-up from zero

Engineered for professional sailors, the Optimum Time OS3 sailing timer combines technical precision with rugged construction. The 65mm ABS housing protects a single-row display with 16mm-high digits for superior legibility. A rotatable face and elastic strap allow easy positioning on your wrist, mast, or boom. The OS3 offers advanced race functionality, including ISAF 5-4-1-0 and custom countdown programs, an audible alarm system, and a unique sync button to instantly align with the race timer. Additional features include a shock-resistant body, water resistance up to 5 ATM, and a bright electro-luminescent backlight for night sailing. For sailors demanding reliability and clarity under pressure, the OS3 remains the benchmark in race timing. Features:- 65mm diameter ABS case- 38mm x 20mm display- single row display with 16mm digit height- adjustable viewing angle- boom/mast mount bracket supplied- adjustable elasticated strap- water-resistant to 5 ATM- shock resistant construction- electro-luminescent backlight featureTimer functions:- normal timekeeping mode (12 or 24 Hours)- pre-programmed 5,4,1,0 ISAF start sequences or 5 min, 3 min, and 1 min programs with audible alarms (can be silenced if preferred)- countdown & repeat or countdown and up- sync button for instant synchronisation if a gun is missed- count-up from zero

The OE3 is the ultimate event companion, offering improved count-up programming with a minute to minute beep signals. The 16mm digit display features an adjustable viewing angle, to ensure visibility when you need it the most. You don’t need to worry about accidental interference, as only the start/stop buttons function while the timer is running. Features: Large 65mm overall ABS case 38mm x 20mm display size Single row display with 16mm digit height Adjustable viewing angle Elasticated strap Water-resistant to 5 ATM Shock-resistant construction High-temperature LCDs suited to severe warmth and UV rays Normal timekeeping mode (12 or 24 Hours). Programmable countdown with alarm at zero Warning beeps during final 30 seconds Minute by minute alarms (can be silenced if preferred)

The OE3 is the ultimate event companion, offering improved count-up programming with a minute to minute beep signals. The 16mm digit display features an adjustable viewing angle, to ensure visibility when you need it the most. You don’t need to worry about accidental interference, as only the start/stop buttons function while the timer is running. Features: Large 65mm overall ABS case 38mm x 20mm display size Single row display with 16mm digit height Adjustable viewing angle Elasticated strap Water-resistant to 5 ATM Shock-resistant construction High-temperature LCDs suited to severe warmth and UV rays Normal timekeeping mode (12 or 24 Hours). Programmable countdown with alarm at zero Warning beeps during final 30 seconds Minute by minute alarms (can be silenced if preferred)

The original and iconic “Big Yellow Timer” from Optimum Time remains the sailor’s top choice worldwide. Designed for racing excellence, the OS3 offers unmatched durability, visibility, and functionality. With its large rotating display and bold digits, you can easily read the countdown in all conditions. The timer can be worn over your sailing gear or strapped securely to the mast, ensuring optimal visibility and comfort. The OS3 features an essential sync button to instantly align with the race committee timer—never miss a start again. Built with a tough ABS case, it is water-resistant to 5 ATM, shockproof, and equipped with an electro-luminescent backlight for low-light sailing. Features include: adjustable viewing angle, elastic strap, mast mounting bracket, ISAF 5-4-1-0 sequences, and multiple countdown modes. Reliable, robust, and race-proven—the OS3 is the ultimate sailing timer. Timer functions: - normal timekeeping mode (12 or 24 Hours) - pre-programmed 5,4,1,0 ISAF start sequences or 5 min, 3 min, and 1 min programs with audible alarms (can be silenced if preferred) - countdown & repeat or countdown and up - sync button for instant synchronisation if a gun is missed - count-up from zero