Naztech Samsung Galaxy S3 2400 mAh Portable Battery Charger Case - Retail Packaging - White Slim Profile Extends Battery Life, LED Battery Indicators Specifications: Input: 5V, Output: 5V, Power: 2400mAh, Protection: Short Circuit/Overcharge Dimension: 146mm x 72mm x13mm, Weight: Approx.80g Compatible with: Samsung Galaxy SIII