MoGo Talk XD for iPhone 4 the MoGo Talk XD for iPhone 4 is one of the best Bluetooth Headset systems for iPhone4 that integrates physically with the iPhone 4 and also protects it from scratches, accidental drops or bumps too! The MoGo Talk System Case for iPhone 4 protects the iPhone while the Bluetooth headset lets you speak easy on the iPhone 4.