Just windup the front light, attach it at the holder and you have a bright front and rear light on your bicycle. use the normal or the flashing mode to secure you will be seen in the dark.
The Swallow is also a charger for your mobile phone. The Swallows comes with a standard Nokia cable; adaptertips for a width range of mobile phone and devices is available on www.powerplusadapter.com
For a productsheet click here