Samsung Galaxy S6 Edge Battery Case, QCell 4000mAh Battery Case for Samsung Galaxy S6 Edge [180 days QCell Warranty Guarantee]-Black State of the art Design. Increases your battery life by an additional 90%. Black Color Full Protection Construction built to endure hard drops & heavy shocks. Slim Profile Battery Case to keep your iPhone stylish while providing 1 full charge. 4 LED Indicator to show battery case charge level. Independent on/off power switch. 180 days QCell Warranty Guarantee with Amazon 30 days Full Refund Guarantee