How to replace a Polar T31 chest transmitter battery - YouTube
Other Sports Watch Brands - Polar Wearlink N2965 Chest Strap and Heart Rate Monitor Transmitter was sold for R400.00 on 2 Feb at 17:35 by Watchx11 in Cape Town (ID:18831712)
Polar chest strap battery. - Main Topic Area - Timetrialling Forum
How To Replace Battery In Polar FS1 Heart Rate Monitor Watch - YouTube
T31 coded™ transmitter Product support | Polar Global