Comfortable Wearing: The heart rate monitor armband paired with a comfortable fabric strap that lets you ride without distraction. HW706 is Armband and H6 is Chest Strap. THIRD-PARTY APP SUPPORT -H6 heart rate monitor chest strap works well with most fitness app,like Strava, Wahoo Fitness,Polar Beat,DDP yoga, HR monitor,Openrider,Zwift, Runtastic,Coosporide and so on.
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