1.5W LED Torch

Lasts for 2 hours with Alkaline batteries; 3.5 hours or more with high capacity NiMH batteries; Extremely bright - do not shine direct into eyes. Nominally 30 Lumens/40000 Lux. Momentary action switch makes it excellent for emergency signalling in wilderness, marine and aviation contexts. How bright is the torch? That's a tricky question. It's bright enough to hurt your eyes if shone directly at them. A rating of X candlepower or lumens should mean the total light output is equivalent to X candles, but does not specify how focussed it is - and sometimes they are used to mean candlepower per foot (foot candles) or lumens per square metre (Lux). A rating of X Lux or lumens per square metre means that at the centre of the beam the light you see is equivalent to the light on a square metre surface shed by X candles a metre away, but does not specify how broad the beam is. A rating of X foot candles means that at the centre of the beam the light you see is equivalent to the light on a square foot surface shed by X candles a foot away but does not specify how broad the beam is. A foot candle is about 10 Lux as the light is concentrated on a much smaller area. Really you need to know both the lumens and the lux, or else one of them and the angle of the beam. LED torches tend to have a very narrow beam but it depends on the lens and the number of LEDs - one LED might have a spread of between 20 and 40 degrees, a 3 or 7 LED torch usually has the LEDs aimed fairly parallel so the larger wattage Luxeon torches have larger lenses to spread the light out over a larger area whilst the smaller Luxeon torches may have a focussing lens (like this one). There is not much additional spread, although there will be some spillage spreadout by the lens.