Product information:

Bluetooth chip: WS500 V5.0 version
Bluetooth support protocol: A2DP, AVRCP, HFP
Audio decoding method: SBC
Receiving distance: within 10 meters
Working frequency: 2.402GHz~2.480GHz
Transmission power: CLASS2, MAX4dbm
Microphone sensitivity: -42±3DB
Low voltage prompt: 3.2V
Sensitivity: 96±3DB
Frequency response range: 20~15KHZ
Sound to noise ratio (S/N)>75db
Distortion (Distortion): <0.5%
Low latency: 53ms
Simulate 7.1 channel 3D reverb

Packing list:

Bluetooth earphone X1