This is due to bluetooth ANT+ and 5 kHz technologies which can also be active simultaneously. Included components Heart rate sensor, soft strap. Sport Running, Swimming, Cycling, Exercise & Fitness.
Heart Rate Monitor with Chest Strap for iPhone Android Phone Wahoo Polar Suunto Garmin Man and Woman Bluetooth 4.0 & ANT+ Band - AliExpress
For all your sports. Bluetooth and ANT+ technologies open up endless connection possibilities to any app or device you want to use.
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38% Polyamide, 29% Polyurethane, 20% Elastane, 13% Polyester Imported SUPREME ACCURACY: Widely recognized for its top precision by many sources, Polar
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