* 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

* Aux line in: 3.5mm socket  

* Output: 22mW

* SNR: ≥95dB

* Speaker Impedance: 32 Ω /40mm 

* Microphone: -42dB±3

* Support Scalable and rotatable design

* Over ear package high - grade comfortable earmuffs

* Type-C charging port

* Colors: black， black+red，black+greed，black+yellow