- Speaker: 53mm
- Size: 86*86*44mm, weight: 140g
- Wireless V4.2 JL
- Supporting protocols A2DP, AVRCP, HFP, HSP
- Support Wireless, TF card, AUX mode play
- Charging voltage DC5V, charging time: about 2 hours
- Call / music time: about 3 hours
- Class A polymer battery: 500mAh.
BS31 Bright sound wireless speaker V4.2 with 500mAh class A polymer lithium battery for 3 hours of music and calls.