IP0007W General Specs Color White Material Plastic Output Power RMS 4W Frequency Response 80-18000Hz SNR ≥80dB Speaker 2 x 27mm speaker Impedence 4ohm Power Supply 3.7V 500mA li-ion battery Interface 3.5mm jack Functions Play the games on your iPhone 4 with the game wheel Compatibility iPhone 4 Features Put the iPhone 4 in the middle of the wheel to play games Enjoy music when you playing games with the iPhone 4 speaker Package Details Weight: 353.10 g Size: 20.5*20*4 cm Package Includes * Game Wheel Speaker for iPhone 4