Accept no imitations or limitations. There is only one Timex IRONMAN* Triathlon®. Stylish enough for the weekend warrior, technical enough for the extreme athlete. Don't swim, bike, run, jump, climb, throw, or kick without one. Digital Performance System, Black Resin Strap, Chrome Case, Water Resistant to 50m, Size: Medium, Timer, Dual Time Zones. Includes digital heart rate sensor and speed + distance sensor and bike mount