Optimum Time Series 15 Sailing Yachting and Dinghy Watch OS1523 - Grey - Unisex - Grey reinforced durable ABS case

12.5mm digit height. Countdown & repeat or countdown and up. Pre-programmed 5,4,1,0 ISAF start sequences, or 5 min, 3 min and 1 min programs with audible warning signals (can be silenced if preferred). Count-up from zero 29mm diameter display size 39mm viewing area. Reinforced plastic case. Soft-touch silicone strap. Black-plated stainless-steel buckle. Water resistant to 5 ATM. Shock resistant construction. Electro-luminescent backlight feature. Normal timekeeping mode (12 or 24 hours) Our latest timer is durable and easy to wear but packs all the functionality of our jumbo models. The super soft silicone strap keeps the mid-size display at just the angle you need.