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Question About Timex Heart Rate Monitor M640
Timex M640 digital heart rate monitor...

My Timex Zone Trainer Digital Heart Rate Monitor Watch T5J983 can't get signal from digital heart rate monitor sensor (M640). All I get is the hollow heart icon. I've replaced batteries in monitor and watch. Had been working fine but both my husband's and my systems don't work after 2 years.

Asked by Taylor on 05/28/2010 1  Answer

ManualsOnline posted an answer 13 years, 12 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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