Model: 

NB19

Bluetooth version : 

Bluetooth 4.0

Power :

 3W*2

Speaker size : 

 2 inches

Battery:  

Li-polymer battery 2500mAh

Play time : 

2.5 hours (max volume) 

& 4.5 hours (50% volume)

Impedance : 

4Ω

Shell : 

TPU+ABS+Iron net  

Net weight:

263g

Dimension: 

134mm*64mm*34.5mm