Mini Portable Dock Cooler Fan for iPhone 4 4G 3GS Touch Dock Fan for Apple iPhone & iPod Touch & iTouch to keep cool when call This iPhone and iPod Touch compatible portable electric fan mounts via your device's dock port, which powers it from your mobile device's battery while holding it securely. The propeller whirls at 4,000 rpm but that shouldn't raise concerns about losing your nose or ears as the twin fan blades are fashioned from soft urethane plastic. Connect on iPhone 4 dock; carry it with your mobile phone Adjustable rotating cradle give you cool feelings from any angle