Capacity of built-in18650 battery：1800MA
Supply voltage: 5V
Output power: 2*7W
Loudspeaker:double 4Ω 8W
Frequency response: 100-18Khz 
Bluetooth version: Shen Zhen Bluetrum Technolog- Bluetooth solution 5.1
Music player telephone speaker Taking pictures via the Bluetooth recording a key to delete priority to play the recording
Pressing the keys to adjust the volume
Recharge indicator
Constant playing for 1-1.5 hours
Supporting FM radio, reading USB and TF card
Super bass
FM radio：88-108