Cute Portable Silicone Horn Stand Amplifier Speaker for Apple Iphone 4s 4g Blue Material: high quality silicone Effectively enlarges music from your iPhone 4 4S/4G 13dB of volume amplified No external power needed Holds iPhone vertically and horizontally, functions well in hand-free mode Item: Horn Stand Amplifier Speaker for Apple iPhone 4 4S/4G Dimensions: 4.17 in x 1.85 in x 1.65 in (10.6 cm x 4.7 cm x 4.2 cm) Weight: 1.45 oz (41 g) Color:Blue Package included: 1X Horn Stand Speaker for iPhone 4 4S/4G