Maximum Battery Life: 10 days Flash modes: signal perception Flashing color: colorful Specification: Material: Plastic + aluminum Battery model : CR2016Maximum Battery Life: 10 daysFlash modes: signal perceptionFlashing color: colorfulThickness of bottom: 0.4cmThickness of edge : 0.1cmSize: 11.7cm×6cm×1.3cmAvailable color: silver, black, golden, red, blueCompatible with apple’s iPhone 4/4sPacking ...