Sigma R3 Speed / Distance / Heart Rate Transmitter - Black Pull_Dual Frame: The frame has a

Frame: The frame has a fully wrapped around shape which provides an extra level of security and creates a stabilised position on the face

It features a tough aluminium construction which makes it ideal for handling the most aggressive of the trails

Ultra-shift synchronisation: the sprocket tuning allows for maximum shifting performance without hesitation: fast

All conditions

Max Bike Size - 29"

Sigma R3 Speed / Distance / Heart Rate Transmitter - Black Pull_Dual Frame: The frame has aSigma R3 Speed Distance Heart Rate Transmitter Black The R3 transmitter enables you to measure your speed, distance and heart rate in a single device. The SIGMA STS Run wireless technology sends digitally coded data packages to the receiver within the running computer. All in One SPEED DISTANCE HEART RATE The R3 transmitter uses an integrated three axis acceleration sensor to measure acceleration throughout the run and accurately measure speed and