* Bluetooth Version: V5.3 

* bluetooth chip：JL

* Support profiles: HSP,HFP,AVRCP,A2DP

* 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 30 meters

* Power Source: Li-ion Battery 400mAh

* TF card input:  Support 256M-32G

* Aux line in: 3.5mm socket  

* Output: 22mW

* SNR: ≥95dB

* Speaker Impedance:φ40mm /32 Ω，

* Microphone: -42dB±3

* Foldaway and rotating design

* Type-C charging port

* Packing: 42pcs/ 54*44*43cm