Color Black Brand Marsing Model B31 Quantity 1 Set Material Aluminum alloy Emitter Brand Cree LED Type XM-L Emitter BIN T6 Number of Emitters 3 Color BIN Cool White Working Voltage 8.4 V Power Supply 4 x 18650 (not included) Current 4400 mA Theoretical Lumens 3600 lumens Actual Lumens 1600~2000 lumens Runtime 120~360 minutes Number of Modes 3 Mode Arrangement HiLowFast Strobe Mode Memory No Switch Type Forward clicky Lens Glass Reflector Aluminum Smooth Flashlight Mounting Handlebar and Helmet Switch Location Tailcap Beam Range 200~250 m Bike Lamp Interface Size 3.5mm Battery Pack Interface Size 3.5mm Packing List 1 x Bike light (90cm-cable) 1 x Adjustable headband (20cm) 2 x Rubber rings 1 x 8.4V 4400mAh Battery Pack (4 x 18650) 1 x US Charger (100~240V 90cm)