Maximum Battery Life: 10 days Flash modes: signal perception Flashing color: colorful Specification:Product name: Flashing aluminum protective case for Apple's iphone 4/4sMaterial: Plastic + aluminum Battery model: CR2016Maximum Battery Life: 10 daysFlash modes: signal perceptionFlashing color: colorfulThickness of bottom: 0.45cmThickness of edge: 0.1cmSize: 11.7cm×6cm×1.1cmAvailable color: Blue ...