Exposure Diablo Mk7 Headlight with Helmet & HB Mount Black, One Size 1300 Lumens 1-24hrs Run Time TAP Switching technology Cable Free - Internal Lithium ion battery - Cold Weather Thermal Insulation Maintains Battery Performance 119 grams / Dimensions L: 109mm x D: 41mm - Unbeatable Lumens Per Gram. Hand Made in the UK / 2 Year Warranty / Lifetime on LEDs