Bon Venu Solar Panel Charger 4000mAh Portable Charger External Battery Power Bank 0.7W,Input:DC 5V/500mA,Output:DC 5.5V/800mA for Usb-charged Devices,Metal material shel With Led light (White) POWER: 4,000mAh, providing ~3 full recharges of a typical iPhone | 4 blue LED lights to indicate available power level | Great capacity, very simple to use | Very convenient backup power source SAFETY: Perfect Backup Battery for those in weather prone areas | Nice to have on hand for emergencies | Recharge via USB Cable, or via Solar Energy | Solar charging is slower but In a power outage, this is a welcome addition to your survival kit. TRAVEL: Lightweight, reliable device easily fits in carry-on bag or backpack | No hunting for a power outlet at the airport | Power to get through your flight | The size, capacity, and integrated solar panel makes this a must have for those who love to travel. CONVENIENCE: Very handy if you're away from a power source for a long time | Compatible for any mobile device that uses a USB power charger | Simple way to keep your phone charged all day | When it's not in use, just leave it on a south-facing window sill. It's the best sweet and useful fashion little gift for your friends or family,fashionable but useful