Built for pure function and simple style, the Tailwhip was designed to meet fundamental needs on the water or on the trail. Rugged shell stands up to whatever you can dish out, and features like lap memory and interval timers that set you up for all your standard outdoor training. Additional features such as a 100-hour chronograph and a hydration alarm speak directly to the needs of more committed adventure racers. Features 100-hour chronograph 35-lap memory 5 interval timers Hydration alarm 10 Run data storage; 3 alarms Water-resistant to 10 ATM; one atmosphere (ATM)=32 feet of water