Samsung Grade A cell and premium microchips ensure high quality; LED indicator with two colors to indicate the charging and discharging process. * Capacity: Add 8 hours of talk time or one full charge to your iPhone 4 / 4S / 3G / 3GS; Add 80+ hours of audio playback or a full charge to the battery life of most mobile phone. * Weight: 3.0 ounces; Input: 5V 1A; Output: USB DC 5V 1A; Input charging time: 4-5 hours via USB or AC adapter (not included). * Package includes: 1 EC TECH External Battery, 1 USB power wire, 1 micro USB connector, 1 warranty card. * Stylish, mini, highlight flashlight and light-weight design; Fits easily into any bag or pocket; Compact "Lipstick" Size: 4.05 x 0.86 x 0.86 inch.