Features: 1. New colorful high quality ABS+PC shell 2. High capacity 20000mAh beautiful Waterproof Solar mobile power 3. Long service life,more than 500 times for the charging and discharging 4. Power bank external battery 5. Portable rechargeable mobile phone charger 6. Led indicator showing when chargering 7. Compatible: iPhone/iPod/NOKIA/HTC/Samsung/Motorola/SONY/PS3/MP3/MP4 ect. 8. Safe and reliable, perfect for using on travelling and outdoor activities Specification: 1.Capacity: 20000mah 2.Input: DC5V-1.0A 3.Output: Dual USB DC5V-1.0A/ DC5V-2.1A 4.Size: 139 x 75 x 20 (mm) Kindly Note: 1. Solar charging is specially designed for emergencies, it's not a primary source of charging due to the compact solar panel size, which may take a long time. In general usage, we recommend chargethe solar power bank via an adapter or computer to shorten the charge time. 2. For the first time use, please recharge the battery for about 10 hours after you receive it , so that it can activate the battery.