Product information: 
 Function: card, radio, clock, voice prompt, call function 
 Type: Bluetooth speaker 
 Connection method: Bluetooth connection 
 Interface type: USB 
 Battery capacity: 1500 mAh 
 Frequency response range: 40Hz-20KHz 
 Output power: 6W 
 Signal to noise ratio: ≥75dB 
 Power supply mode: built-in lithium battery 
 Channel: 2 
 Playing time: 6 hours 
 Expansion storage: 16GB 
 Bluetooth protocol: 4.2 
 Number of speakers: 2 
 Effective distance: 10 meters 
 Operation mode: button
 
 Packing list: 
 Small speaker*1