*BT Version:  V5.3

*BT Noise reduction chip: JL7018F

*Audio range:  20Hz-20KHz 

*Frequency Range: 2.402 GHZ ~ 2.480

*BT profiles : HSP,HFP,AVRCP,A2DP,AAC,SBC

*Emission range:   ≥ 20 M

*Support Active Noise Canceling:feedback

*Support Voice Assistant Siri

*Support low delay game mode

*Battery:  Real 400mAh 

*Music/Talk times-normal mode:  About 40h

*Music/Talk times-ANC mode:About 30h

*Stand-by time:  1000 hours

*Noise frequency width: 50-800Hz

*Noise reduction depth :Real 20dB±2  

*Aux line in: 3.5mm socket  

*Speaker: φ40mm/32Ω bass music

*Microphone: -42dB±3 

*SNR:  ≥95dB 

*Speaker Sensitivity: About 118dB±3