EC Technology 6000mAh Ultra Slim Compact Design External Battery Power Bank(5V/2.1A) Charger For Phone Matte aluminum texture, high performance, durability and aesthetic persuing. Partial concave and convex surface designed for antislip consideration when grab in hand. Ideal for most phones and digital devices. Compact, portable and stylish Design. Convenient to carry in your bags. High Capacity:6000 mAh of capacity and a High energy conversion rate and many current standard alternatives charges the iPhone three times and large-capacity phones like the Galaxy S4 almost twice. 500+ recharge cycles over the life of the battery. Weight: 0.32Lb; Input: 5V 1A; Output: USB DC 5V 2.1A Package contents: EC TECHNOLOGY portable charger, Micro USB cable,User Manual