Waterproof Bluetooth speaker-IPX4                                                                       Phone handsfree call
Re-dial the last phone number            
High sensitivity microphone                                                                                          
With suction cup for addorbed on smooth surface
Charging by USB
Quality music sound
Voice prompt function
Rubber finishin

RF range: 10M
Frequency response: 100HZ-20KHZ
Output: 3W
S/N ration:  75db
Built-in Lithum battery: 400mAh
Charging voltage: 5V
Charging time: 2-3 hours
Playback time: 6-7 hours