Emergency Power Bank 20000mAH Poly- Charge Anytime and Anywhere. Fashionable portable design with high power capacity. Specially designed for Mobile Phones and Digital devices. LED indications for battery charging and battery status. Dual Charging Ports: 5V/1A and 5V/2.1A (Max.) Multi-Compatibility. Compatible with Mobile Phones, MP3 / MP4 Player, Portable Speaker, Bluetooth Headset etc. Protection against overcharge, over discharging, over Current and short-circuit. It will take approximately 8 hours to be fully charged.