Sound ID 510 Stereo Bluetooth Headset w/ EarPrint App for Apple iPhone - Apple Recommended [Bulk Packaged] The world's first Bluetooth Headset with its own iPhone App. Made and Designed for Apple iPhone 4, iPhone 3GS and iPhone 3G Devices. EarPrint App - Personalize your sound preferences and settings with the first ever iPhone App for Bluetooth headsets. Touch Sensor Volume - No more fumbling around to adjust the volume - you're in control with just a touch of your finger on the headset. 3X NoiseNavigation - 3 sensitive microphones eliminate wind and background noise from both ends of your call. BULK PACKAGED ITEM: Includes Headset; Charger; USB-Cable; Clip holster; 3 RealComfort EarLoops and a Ear Hook