special function:
1. Abandon the traditional earphone design, the binaural sensor non-earphone earphone earphone design, hesitant to the swelling caused by earplugs. Our wireless headsets use the latest Non-In-Ear technology and don’t hurt when used for long periods of time.
2. Voice dialing: Press and hold the multi-function button for about 2 seconds to start voice dialing.
product description:
Bluetooth version: V5.0 + EDR
Wireless protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3
Transmission frequency: 2.4GHz (2.402-2.480GHz)
Transmission distance: 10 meters
Speaker sensitivity: 95±3dB
Frequency response: 50-10kHz
Microphone sensitivity: 50-18kHz
Standby time: about 200 hours 
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