Specific Bluetooth Chip: MVSilicon AC6965E version:V5.3 operating distance: 10m Bluetooth streaming Play Bluetooth hands-free TF card playback music file playback support select folders support max 128G Speaker Output power (RMS at 10% ) 3w/0db 1khz S ratio with: 95db(1KHZ/0DB) rechargeable battery(900mah) Charging time: 5V 1A 1.5-2H Full battery play time: 30Hours TF card mode(60% Volume) Full battery play time: 30Hours bluetooth mode(60% Volume) Full battery play time: 24Hours phone call mode(60% Volume) Maximum battery power consumption in standby mode: 100uA key operation M: short BT/TF mode switch, long to switch folders only TF mode O: long to turn on/off the power, or Reject incoming call short play/pause music playing, answer hang up incoming call, Double click to open voice control / -: short previous song/Long volume increase +: short next song/Long volume decrease Color: As Shown Material: plastic Package Contents: 1 x outdoor speaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.