Size 1 = US PlugSize 2 = EU PlugFeature:Rechargeable Headlamp:1.CREE XM-L T6 Headlamp2.Model of LED: 3x CREE XM-L T63.Output bright can come to max 6000 lumens [lm]4.Internal wiring applies the high efficient booster circuit， working voltage is wide and can utilize the batteries in the largest extent5.Waterproofing design6.Adjustable base is provided for each head lamp， with back and forth inclination7.One button switch : 1x Cree XM-L T6/ 2x Cree XM-l T6/ 3x Cree XM-L T6/ Flashing8.Model of Battery required: 2x 18650 3.7v9.Color: Black10.Dimension : 83 x 37 x 58mm11.Weight : 219g Package Included:1x Headlamp Headlight;2x 18650 Rechargable 3.7v battery1x car charge;1x AC charge;1x USB Cable.