This brennenstuhl 36 1 led rechargeable work lamp has an ingenious 2 stage operation the first emits a large amount of light thanks to its 36 extra bright leds and optimised optics while the second powers a single led in the lamp head for an extra long running time when the unit is fully charged it can operate for up to 4 hours using the large light and up to 12 using the single lamp head led the casing is shockproof and has a rubberised surface for extra grip during use