Awei Powerful Bluetooth Speaker

Parameters: model:y333 bluetooth version: 5.0 battery capacity: 1800ma/3.7v bluetooth frequency: 2.4ghz bluetooth transmission distance:> 10m bluetooth transmission frequency: class 2 (2.5mw) bluetooth antenna: built-in supported protocols: a2dp/avrcp/hfp/hsp rated power: 5w*2 distortion: thd<1% frequency response range: 60hz~16hz s/n ratio≥90 fm bandwidth range: n fm antenna: n standby time>3.5h (100% volume) charging time<3h working voltage: dc 3.3v-4.2v charging voltage: dc 5v±0.2v charging current: ≥1a product size: 460mm*78mm*74.5mm(l*w*h) charging interface: micro-b