SHIDU M800 UHF | Wireless Multi-Functional Voice Amplifier IPX5 Waterproof Loudspeaker (18W, Bluetooth 4.2, 4400mAh)

18W Output Power | UHF Wireless | IPX5 Waterproof Design | Bluetooth Version: 4.2 | Battery Capacity: 3.7V 4400mAh (18650 2200mAh×2) | Amplifying Service Time: 10–12 Hours | Music-use Time: 6–8 Hours (Medium Volume) | Horn Size: Double Voice Coil Speaker 4Ω 3 Inch | Charging Voltage: DC 5V | Signal Range: 10 Meters | Frequency Response: 90Hz–18KHz | 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