Petzl Zipka:

The Petzl Zipka is an ultralight and compact led headtorch with the same headlamp as the Petzl Tikka, except that the roll-up strap system replaces the elasticated headband, making it even smaller and more lightweight than the Tikka. The Zipka provides up to 150 hours of light from 3 AAA batteries. The Petzl Zipka torch can be worn on the head, wrist or ankle and is ideal for keeping permanently in the bottom of your rucksack, in the glove compartment of your car or in your pocket to avoid ever being caught out by darkness. The Petzl Zipka headtorch is available to buy online at GearZone with FREE UK delivery.