BS37 Dancer, outdoor wireless speaker, BT V5.0, with 1800mAh battery, for 3 hours of music, support BT, FM, USB, AUX, TWS playback mode1. Speaker: 8 inches 2Ω15W.2. Battery: 1800mAh, A grade, 18650.3. BT specification: BT V5.0 Zhongke Blue Flood.4. Function: support BT playback / BT TWS connection, FM, USB, AUX playback mode, support wired microphone input. Support independent switch of colored lights.5. Charging voltage: DC 5V, charging time is about 2.5 hours.6. Music time: about 3 hours (at 80% volume playback).7. Sizes: 592*510*388mm. Weight: 1.9kg.