Wireless fast charging mini stereo car subwoofer wireless bluetooth speaker

* Type Bluetooth Speaker

 *Connection method Bluetooth connection 

*Interface type USB *Battery capacity 4000

 *Frequency response range 50HZ-50HZ *Output power 5v-1A *Signal to noise ratio ___75dB 

*Power supply mode Built-in lithium battery 

*Channel 2.1 Playback time 10 *Extended storage 32GB 

*Bluetooth protocol 4.2

 *Number of speakers 2 * Effective distance 10 meters

 *Features Voice prompt, card, call function 

*Operation mode 

*Applicable people General 

*Shell material plastic 

 *Support format SD card 

* Speaker adjustment mode 

 *Box material metal * Appearance size 16*98*80MM