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Timex T5D761 GPS Speed and Distance Sensor

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Timex Digital Speed and Distance Sensor. Works with all Timex, Ironman, Triathlon and Bodylink Speed and Distance Watches. Provides distance, pace and speed data in English, metric and nautical units using a highly accurate GPS tracking system. No calibration required- up to 99% distance accuracy. Splash-resistant case. Adjustable arm strap and a belt clip enclosed. (more...)