Bluetooth alarm speaker - built in lithium battery,Green,10W

Connection method: Bluetooth connection
Interface type: USB
Output power: 10W
Power supply mode: built-in lithium battery
Playback duration: 8 hours
Extended storage: support
Bluetooth protocol: 5.0
Number of speakers: 2
Effective distance: 10M
Operation mode: press key
Applicable population: General
Display: Yes
Shell material: plastic silicone
Support app: Yes
Supported format: TF Card
Speaker adjustment mode: key and knob
Whether there is radio function: Yes
Box material: plastic
Appearance dimension: 120 * 120 * 72mm
Product weight: 0.25 (kg)