The Energizer Hi-Tech LED Keyring light provides an easy way to keep light at your fingertips. Attach to your keyring for light when you need it. The Hi-Tech LED Keyring light operates with an instantaneous on switch. It illuminates objects up to 18 metres away and provides ample light for finding objects at the bottom of a bag or unlocking a door in the dark. It will provide 6 hours of continuous useable light with one set of 2 Energizer CR2016 batteries. Features: • Continuous light for 7 ½  hours using replaceable Energizer CR2016 Lithium coin cells • Lifetime LED never needs replacing • Bright White LED illuminates objects up to 18 metres away • Convenient key ring attachment • Smooth contours slide easily into purse or  pocket • White LED provides 7 lumens of light • Sufficient light for finding objects at the bottom of a bag or unlocking a door in the  dark