The Timex 5K420 Flex Tech Digital 2.4 ANT+ heart rate transmitter is a direct replacement for models M229,M536,M560,M843,M844, and M878. Features a comfortable soft strap and user replaceable battery. Also compatible with other ANT+ devices.
We've got the hot new Garmin models in stock! Bodytronics offers low prices and fast, free shipping on every Garmin model!
Top quality Omron Pedometers make a great gift. Bodytronics stocks the entire line - all with free shipping!
The latest Polar Heart Rate Monitors are in stock now at the lowest prices ever! Bodytronics is an Authorized Polar Retailer.