thingsI received a replacement, and could verify it was not the watch, nor the strap, nor the battery, but the attached signal emisor to the strap (since the new one worked fine with the old battery, the old watch and the old strap).The problem was that again after a month the same happened

Watch works great, but the band broke after 1 year

Great watch, the HRM works great, even in a hard workout!

I have not tried to swim with the heart rate monitor, but again the stop watch feature works great for tracking tap times and number of laps in the water

Have not explored all the functionalities but heart rate monitor works great

Watch works great, but the band broke after 1 year

The new HRM works perfectly well with my old T5J031 watch, so I'm assuming these are interchangeable with most, if not all, of the Timex HRM watches

This worked perfectly out of the box was was very easy to use.

This is such a great work-out watch

The stop watch feature works great for keeping track of my laps & times as I run.

This watch worked great for running and was comfortable as a daily use watch