Thumb Score: +7 Portable Hand Manual USB Emergency Charger with Multiple USB Connector for Mobile Phone - Green Link [rosegal.com] Code: RGMAR02 - Supporting multiple USB interface - Maximum output voltage: 5.5V - Maximum output current: 600mA - Hand-cranked manual USB charger with quick action, it's green, environmental, economical and safe - Mini size, convenient to carry - With LED indicator light