It folds to a handy compact size that easily fits into a pocket or purse. It weighs 230 grams. Don't let it's size fool you. It has 30 brilliant LEDs that have three light intensity settings controlled by a touch sensitive on and off button. We tested the battery life and got 8 hours on low, 5.5 hours on medium and 2.5 hours on the high light setting. The inbuilt rechargeable battery can be easily charged using the USB power lead that comes with the light. As well as being able to use your computer to power the light you can use the USB power adaptor from your iPhone, iPad or other USB powered device to plug the light directly into a mains power socket. USB power adaptors can also be purchased easily. Planes, trains and even buses are now appearing with USB power sockets that can also be used to run this brilliant light light. Buy two because anyone who sees your light will also want one!