* BT Version: V5.3 

* BT chip：JL6955F

* Support profiles: HSP,HFP,AVRCP,A2DP,SDP,AAC,SBC.

* BT frequency: 2.402 GHz - 2.480GHz

* Sound Mode: Real bass Stereo

* Music time: About 15 hours

* Talk time: About 15 hours

* Charging time: About 2 hours

* Operating Distance: About 20 meters

* Power Source: Battery 400mAh,with protection

* TF card input:  Support 256M-32G

* Aux line in: 3.5mm socket  

* Output: 22mW

* SNR: ≥95dB

* Speaker Impedance: 32 Ω，φ40mm

* Microphone: -42dB±3

* Foldaway design,Metal stretchable sheet

* Type-C charging port

* Colors: black, white