Wireless Connection:Bluetooth 4.0,ANT+. Bluetooth & ANT+ Dual-Mode Smart Heart Rate Monitor. Bluetooth & ANT+ Dual Protocol Support. Compatible with ANT+ Protocol Devices. Bluetooth 4.0 for Quick Pairing with a Transmission Range of up to 25m, Ensuring Stable Connection, No Interruptions (ANT+ Signal Reception Range Up to 10m).
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