Bluetooth Watch Speaker

Interface type: USB
Battery capacity: 400 mA
Frequency response range: 100HZ-20KHZ
Output power: 3W
Signal to noise ratio: ≥80db
Power supply mode: built-in lithium battery
Channel: 2.1
Play duration: 6 hours
Extended Storage: 32GB
Bluetooth Protocol: 2.1
Number of speakers: 1
Effective distance: 10m
Box material: plastic
Appearance size: 70*24MM
Product weight: 0.17(KG)