Etc. The real object, a little energy for the cell phone always to have her, met the U-Bright. A button that allows all functions (check battery charge status of the U-Bright, light on / off) are available plus an LED which achieved a remarkable brightness. I also have a larger copy of a competitor, which for longer stays Camping is serving, for day trips, which might be used in the navigation system or mobile phone for mobile Geocaching etc. this device is simply great. Fits in your pocket or if necessary in the summer trouser pocket. I would buy it again at any time and have it my wife and colleagues / friends already "turned on", which are completely satisfied.