BS-03

* Bluetooth chip:Bluetrum  

* Bluetooth Version：V5.0+EDR

* Support:L2CAP/A2DP(AVCTP/AVDTP/AVRCP)HSP/HFP

* Frequency response : 150HZ-20KHZ

* Bluetooth transfer distance:10m

* Supports handsfree function

* Speaker:￠28 mm 4Ω/3W

* Built-in 160mAh rechargeable lithium battery 

* S/N Ratio：≥90db

* Normal volume playing time: 2-3h