It''s cheap. It uses 3 dollar batteries, two of them (one for belt, one for watch), and they last about a year.

Without using electolyte gel, you may get sporadic readings. I use Buh-bump cream and the 8 dollar bottle has lasted over a year.

It works, though it works better if you sweat a lot or use electolyte gel.

Similar Products Used:

Polar Beat, Vetta HRM-50