Igpsport iGPSPORT for Running Cycling Gym Compatible with Garmin Polar Wahoo Bike Computer

【Compatible with top fitness apps】 Endomondo,UA Run,Polar Beat,WahooFitness,MountainBike,ALA COACH,Zwift,iGPSPORT for iOS and Android 【Comfortable to wear】 Around 47g you soon forget you are wearing it.The soft textile band length is adjustable from 25.6" to 37.4", the wearable chest can up to 47.2" .which makes it more comfortable to wear 【More Accurate】Optical sensor technology for highly accurate monitoring and measurement.Train smart,get fit.allowing you to maximize your workouts.Suitable for cycling, running, fitting, etc 【Strong battery life】Lasts up to 1 year (one hour per day)