IPJ31W General Specs Material silicone Function provide a stable support for iPhone4G Compatibility iPhone Features Unique design horn stand speaker for Apple iPhone 4G. Made of high quality soft silicone material. No external power needed and 13dB volume amplified. Holds iPhone vertically or horizontally. Additional opening reserved for charger port. Can be washed and protect your phone from scratching and dirt. Package Details Weight: 80.25 g Size: 13*10.5*4.5 cm Package Includes 1 × Cute Horn Stand Speaker Amplifier for Apple iPhone 4G