SHIDU M800 Wired Voice Amplifier With IPX5 Waterproof Multi-Functional Portable Speaker (18W, Bluetooth 5.0, 4400mAh)

Output Power: 18W | Model: M800 | Bluetooth Version: 5.0 | Battery Capacity: 3.7V 4400mAh (18650 2200mAh×2) | Amplifying Service Time: 10–12 Hours | Music-Use Time: 6–8 Hours (Medium Volume) | Charging Voltage: DC 5V | Frequency Range: 90Hz–18KHz | Horn Size: Double Voice Coil Speaker 4Ω 3-Inch | Signal Range: 10 Meters | Size: 96×45×120mm | N.W.: 388g | G.W.: 670g | Appearance Technology: ABS+TPU | Format Support: MP3 / WMA / WAV / APE / FLAC | Functional Interface: TF Card / USB / DC5V / AUX / MIC