Specification:

        Product size: 196X86X86MM
        Bluetooth chip: ATS2823 / BK3254
        Bluetooth version 4.0
        Speaker power: 5W*2
        Charging voltage: 5V
        Resistivity: 4Ω
        S/N ratio >80dB
        Battery capacity: Lithuim 4000mAh 3.7V
        Bluetooth speaker & hands-free phone
        Building rechargeable battery upto 35 hours of music
        TF card optional
        NFC connection optional
        CE, FCC, ROHS available

     Features 

             Water resistance IPX6