Multimedia Outdoor Speaker

Power supply mode: USB
power supply mode: built in lithium battery
frequency response range: 100Hz-20KHz
Bluetooth protocol: 4.1
playback format: MP3
output power: 3W
connection method: Bluetooth connection
interface type: USB speaker adjustment method: key
Channel: 2.1
applicable crowd: General
box material: ABS
battery capacity: 400mA
shell material: Plastic
function: Fall proof, card insertion, radio, Call function
playback time: 2 hours
effective distance: 10M
support format: tfcard
signal to noise ratio: ≥ 70dB
extended storage: 16GB