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Contact SupplierWe are offering Bluetooth speaker with power bank 4400 mah
Battery- Speaker: Built-in Lithiumion battery, 4400mAh
Battery Lion: 3.7V
Distortion: ≤0.3%
Power: 10 watts
Frequency Response: 150Hz –20kHz
Speaker unit: 40mm, 4Ω
Signal to noise ratio: 90db±2db
NFC function and Waterproof: IPX5
Welcome to contact us for more details.