LED Source:3*5W 3535 LED+20W COB +SMD Battery type:3.7V 2000mAh Li-ion Battery (103045) Dimension:46(L) x 23(W) x 114.3(H) mm Max output:450lm Funciton:Top switch Single press:Front Light Brightness (High→ Medium → Low) Double press: Ultra-bright mode Long press: Flash - SOS Side switch: Single press: COB brightness (Low → High) Long press in any mode: Stepless dimming Double press:Switching among 7 RGB modes RunTime:1.5h Material:Aluminium