Comfortex+ elastic chest belt with Hip Clip for mounting the R1 or R3 transmitter. Compatible with Sigma Sport RC 1209 and RC 14.11 heart rate monitor and with Sigma Sport cycle computer BC1909HR/BC2209/ROX.
The R3 all in one transmitter: distance-, speed-, and heart-rate measurement. Equipped with a 3-axis acceleration sensor for maximum accuracy. Compatible with Sigma Sport RC 1209/RC 14.11 heart rate monitor.