"The first and only SOFT transmitter, this new transmitter combines Polar?s superior technology with a new fabric design where the electrodes are built into the fabric strap. Resulting in a lightweight transmitter the comfortably fits any body type. This washable transmitter is coded to eliminate cross talk from other Heart rate monitors providing you with reliable heart rate information even in a room full of other transmitters. XS - S: 22" to 32" chest, L - XL: 27" to 54" chest. User-changeable battery."
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