* Bluetooth Version: V5.3 +EDR

* bluetooth chip：JL6955F

* Support profiles: HSP,HFP,AVRCP,A2DP,SDPAAC,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: Li-ion Battery 400mAh,with protection board

* With FM radio: 87.5-108.0MHz

* Support low delay game mode

* TF card input:  Support 256M-32G

* Aux line in: 3.5mm socket  

* Output: 22mW

* SNR: ≥95dB

* Speaker Impedance: φ40mm/32 Ω

* Microphone: -42dB±3

* Stretchable design

* Type-C charging port

* Colors: black,  Pink, Gray, white ivory, blue

* Accessory : USB line,aux cable,User manual