Sigma R3 Comfortex+ Transmitter & Chest Belt - Black Position_Front & Rear 5mm or 175mm lengths

5mm or 175mm lengths

It's designed for stress-free commuting

Matrix features a soft

which makes it great at handling all the intensity that's associated with long days out on the road

Durable and good overall performance for the money

Sigma R3 Comfortex+ Transmitter & Chest Belt - Black Position_Front & Rear 5mm or 175mm lengthsSigma R3 Comfortex Transmitter & Chest Belt 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