Type: Cradle & Dock Compatible Phone Manufacturer: iPhone 4 Specifications: Battery chemistry: Lithium-ion polymer Input: 5V DC, 500mA Output: 5V DC, 1000mA Capacity: 1200mAh Dimensions: 2.5" x 2.3" x 0.7" Weight: 1.76 oz. Certifications: CE, FCC, UN38.8 Features: Power dock with kickstand lets you watch videos and enjoy FaceTime chats hands-free. 1200 mAh delivers the charge you need for extending music, video and FaceTime chats. Built-in dock connector for iPhone and USB cable so there are no parts to lose and protected when stored -- everything you need is built right in. Two position charging: In-hand use for phone conversations and docking for charge, sync and FaceTime Works with most cases LED battery indicator light tells you how much power you have left Adds up to 20 hours of music, 5 hours of vid...