The Exposure USB Charger Cable is the easiest way to charge your bike light when you are not near any mains; this cable allows you to power up the Exposure light from any USB power source, including your laptop or computer! Different USB ports can vary in output which means times will vary depending on the device used to charge. The USB charger may take longer to charge your Exposure bike light than the mains charger but it is handy and compact so it can go anywhere with you and easily fit in to your pocket. Once you unplug your light from the cable and turn the light on you will be able to tell by the colour of the LED whether it is fully charged or not. About Exposure Lights Exposure Lights have always been designed to get the maximum light from minimum sized unit and Cable Free Design ensures this is maintained. Utilising superb brackets Exposure Lights now include handlebar and helmet mounts, attaching quickly, safely and securely for versatile hassle free riding.