Alarm speaker - Radio,Black,3W

Connection mode ： Bluetooth connectivity
Interface type ： USB
Frequency Response ： 100HZ-20KHZ
output power ： 3W
Signal to noise ratio ： ≥75dB
Power supply mode: built-in lithium battery
Vocal tract ： one point one
Playback duration ： 8 hours
Extended storage: 16GB
Bluetooth protocol ： four point two
Number of speakers ： 1
Effective distance ： 10 meters
Operation mode ： Key
display ： yes
Shell material : Plastic
Is app supported : no
Supported formats : TF Card
Speaker adjustment mode : knob
Is there a radio function : yes
Cabinet material : Plastic
Appearance dimension : L103*W62*H84mm