Enjoy exceptional performance and an unmatched fit with Biolite Headlamp 330, featuring exclusive 3D SlimFit Construction. Measuring only 9mm in the front and weighing just 69g, this headlamp sits comfortably and securely on the forehead without slipping or bouncing. Stay cool and dry during any activity with moisture-wicking fabric, and eliminate the need for alkaline batteries thanks to the rechargeable battery. Features Max Output 330 Lumens Red Night Vision Included Adjustable Front Panel 40 hours on LO, 3.5 Hours on HIGH Recharge Via Micro USB Specifications Lumens 330 Lm Total230 Lm Spot100 Lm Flood Lighting Modes White Flood + DimmingWhite Spot + Dimming Red FloodWhite Strobe Battery 900 mAh, 3.4 Wh Li-on, USB Rechargeable Inputs Micro-USB Charge In Brightness Memory Yes Warranty 1-year limited warranty plus backed by HolyFit Guarantee Burn Time (hours) 40 LO/3 HI Water Resistance IPX4 Weight  2.43 oz (69 g) Lock Mode Yes Beam Distance Flood: 10m; Spot: 70m In The Box  HeadLamp MiniMicro USB Cord