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By certification 
Waterproof Bluetooth speaker-IPX4 Phone handsfree call
Re-dial the last phone number
High sensitivity microphone
With suction cup for addorbed on smooth surface
Micro USB
Quality music sound
Voice prompt function
Rubber finishing
Patent triangle shape
Bluetooth: Bluetooth 2.1+EDR,
Speaker: 13mm dual magnetic trumpets
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
Re-dial the last phone number
High sensitivity microphone
With suction cup for addorbed on smooth surface
Micro USB
Quality music sound
Voice prompt function
Rubber finishing
Patent triangle shape
Bluetooth: Bluetooth 2.1+EDR,
Speaker: 13mm dual magnetic trumpets
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
