Portable outdoor subwoofer

Connection mode: Bluetooth connection
Interface type: USB
Battery capacity: 300mah
Frequency response range: 100HZ-20khz
Output power: 3W
Signal to noise ratio: ≥ 85dB
Power supply: Built-in lithium battery
Duration: 1-3 hours
Extended storage: not supported
Bluetooth protocol: 2.1
Number of speakers: 1
Effective distance: 10 m
Functions: Card insertion, radio, call function
Operation mode: press the button
Applicable people: General