● BT Version: V5.3 

● BT chip：AC7006F

● Support profiles: HSP,HFP,AVRCP,A2DP,SBC,AAC

● BT frequency: 2.402 GHz - 2.480GHz

● Sound Mode: Real HiFi bass Stereo

● Support low delay game mode(about 40mS)

● Support micro sd (TF) card 

● Charging time: About 2-3 hours

● Music time: About 40+ hours

●Talk time: About 40+hours

● Operating Distance: about 30 meters

● Power Source: Li-ion Battery 400mAh,with protection plate.

● Aux line in: 3.5mm socket  

● Output: 22mW

● SNR: ≥95dB

● Speaker Impedance: φ40mm/32 Ω

● Microphone: -42dB±3

● Support Scalable and rotatable design

● Over ear package high - grade comfortable earmuffs

● Type-C charging port