Sigma R3 Heart Rate Monitor Chest Belt

What are the delivery costs?

We offer Free UK Mainland Delivery on all orders over £20. Products shipped to outlying UK regions are excluded from free shipping.

Standard delivery is normally 2 - 5 working days.

Please view our delivery page for full information on UK and international delivery costs.

The R3 transmitter enables you to measure your speed, distance and heart rate in a single device – All in One.

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 distance. The COMFORTEX+ also records an ECG-accurate heart rate measurement.

The running computer combines three functions in one device: speed, distance and heart rate. And there are no extra accessories.

Key Features:

  • For HR, speed and distance
  • Compatible with RC 1209 and RC 14.11
  • Textile chest belt
  • Includes hip-clip


    Occasionally, without notice, manufacturers change product design and/or specifications.