Features and Benefits: Specifications: Rated voltage: 3.7VProtection class: IPX-4Light source: LED and COB LEDLuminous Flux: COB: 980LM/500LM/230LMLED High 250LMBattery: 3.7V 21700 Cell 4000mAhRuntime: 4hrs (max COB) - 20hrs (LED spot)Rated charging voltage: 5VMax. charge current out current: 1A;