Weight:670g Dimensions:2.05in*2.05in*1.89in(5.2cm*5.2cm*4.8cm) Brand:UltraFire Model:D66-L2 Quantity:1 Material:Aluminum Alloy Color:Black Emitter Brand: Cree LED Type:XM-L2 Emitter BIN: T6 Number of Emitters: 5 Color BIN:Cool White Working Voltage:7.2-8.4V Power Supply:4 x 18650 Batteries Current:2800mA Theoretical Luminous:3000LM Runtime:2~3hrs Number of Modes:3 Mode Arrangement: Hi>Mi>Fast Strobe Mode Memory:No Switch Type:Reverse clicky Switch Location:Tailcap Lens:Glass Reflector:Aluminum Smooth Flashlight Mounting:Handlebar and Helmet Beam Range:250m PackingList:1 x Bike Light (cable length: 70cm) 1 x 18650 Battery Pack (4400mAh with two parallel two series, 50cm) 1 x 2-Flat-Pin Plug Charger (140cm, 100~240V, 50/60Hz) 1 x Headband (50~80cm) 2 x O-Rubber Rings<img src="http://112.74.112.28/down/products/427019/427019_000.jpg">