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. - Details - Digital Display Matte Resin Strap INDIGLO® Night Light Matte Case Water Resistant to 100m Size: Extra Large Timer Dual Time Zones One-Year Warranty 2 Year Battery Life - Heart Rate Monitor - Target zones Average heart rate Time in zone Flour linked interval times Recovery heart rate timer %-of-max heart rate display Max heart rate zone calculation - Speed and Distance - Altitude/Elevation Data GPS-provided altitude with vertical speed Finish time Exact speeds Exact pace Exact distance Continuous odometer Hands free operation