The JETBeam E3S is a high-tech solid and compact pocket torch that can be conveniently carried around with you at all times. The E3S began its life as a single solid piece of 306 stainless steel bar and developed into a state-of-the-art tool. It features two levels of output, which make it really simple to choose the best compromise between brightness and run time in any given situation. Product features 2 brightness levels: 155 lumens in 1 hour and 23 lumens in 15 hours Easy selection of light levels by rotating the head Cree XP-G R4 LED with a life span of 50,000 hours Powered by a single AA battery (Alkaline, Lithium, or rechargeable NiMH), which are readily and cheaply available High efficiency digitally regulated light output features stable and constant brightness Waterproof according to IPX 8 standard Toughened, ultra-clear mineral glass with special anti-reflective coating Can be placed on flat surface for use as a ‘candle' Diameter: 18 mm Total length: 92 mm Weight: 75 g 1 AA battery not included What's in the box Comes in metal box, with a plastic diffuser, battery not included