Features Produces 225 lumens on max setting Compact, low-profile design is powered by a lithium ion rechargeable battery (3-hour USB charge time) Vari-width elastic headband purpose-built for running Six-setting 3 LED battery meter PowerTap™ Technology allows instant transitioning between full and dimmed power Brightness Memory allows you to turn the light on and off at a chosen brightness and revert to its most recent brightness Settings include full strength, dimming and strobe Multifaceted optical lens design Lockout feature safe guards against accidental use when stored in a pack or pocket IPX4: Storm proof—Tested to withstand rain and sleet from any angle 750 ma-Hr li-ion battery Tech Specs Lumens: 225 Weight With Batteries: 56 g Max Burn Time: [High] 1.5 Reserve 2 Hours IPX Rating: IPX4 Batteries: Li-Ion