Great for emergency kits or outdoor adventures, the hand-powered clip ray makes sure you have always got light and power for your Smartphone no batteries needed. Crank for one minute and produce enough power for 10 minutes of light. Crank again and use a standard USB port to charge your smartphone and with 3 super bright led lights, this emergency flashlight will always light the way. Use the built-in carabineer to clip on to your belt or backpack for convenient hands-free use.