1 Year Warranty! Features: 1. input DC4.8-5.4V 1~2A(max) 2. output 5V~1A, 5V~2.1A 3. capacity 7500mAh 28Wh 4. Aviation Aluminum Alloy Shell. 5. LCD display to indicates charging/discharging status and residual power. 6. Adopted Japan high efficient boosting technique and battery protection IC. 7. Protective design to prevent over charging, over discharging and short circuit, and also high temperature protective design. 8. Weight: 213g 9. size: 109x60x23mm Compatible with : A) iPad 1/2/3, iPhone 4/4S, 3Gs/3G, and iPod touch B) All cell phones with micro USB connection, such as Blackberry, HTC, Samsung, Motorola, LG, etc. C) E-readers, such as Kindle, Nook, etc. D) Gaming devices, such as Nintendo DS, Sony PSP, etc.