Item Type:Cube Bluetooth Speaker 
<br />Interface USB
<br />Function call function, dust, voice prompts, card
<br />(Loudspeaker): 4  3W 
<br /> Frequency response : 180Hz ~ 18kHz
<br />Bluetooth 4.0
<br />Extended storage 32GB
<br />Effective distance 10 meters
<br />Play time 7 hours