POLAR T31 TRANSMITTER

Need an extra chest strap for your heart rate mnonitor?  We've got you covered.  This is compatible with all heart rate monitors except Protrainer XT, Protrainer XT Cycle, XTrainer, S510, S520, S625x, S710, S720i, S725x, S725, CS100, CS200, CS200cad, RS200, and RS200sd.