Magene Optical Armband HRM Sensor Advance Locate the valve hole

Locate the valve hole

8 RATIO REPLACES 2:1 RATIO

every sprocket on the R8000 is steel—making it noticeably more durable for riders who rack up thousands of kilometres each year while still delivering premium shifting performance

rigid recyclable core allows the tape to be pulled and applied with tension

Lifetime Incident Protection and 5 Year Factory Warranty

Magene Optical Armband HRM Sensor Advance Locate the valve holeA New Accurate, Comfortable and Convenient Option for Exercise The Magene H803 heart rate armband ensures safe exercise with a super accurate real time heart rate monitor. With its adjustable armband, you can exercise wherever you want. The thoughtful design enhances comfort and convenience, allowing you to explore nature with confidence while wearing this heart rate armband. Accurate Real time Heart Rate Monitoring The H803 heart rate armband