Samsung HM1100 Bluetooth Wireless Headset Durable & Stylish Clarity and high sound Quality Compatible with: Apple iPad, Apple iPad 2, Apple iPhone, Apple iPhone 3G, Apple iPhone 3Gs, Apple iPhone 4, Apple iPhone 4 CDMA Also Compatible with all Cell phone Models that are Bluetooth enables: BlackBerry By RIM, Cal-Comp, Casio, Danger, HP, HP Palm, HTC, Huawei, Kyocera, LG, Motorola, Nokia, Pantech, PCD, Samsung, Sanyo, Sharp, Sony Ericsson, UTStarcom, and ZTE Multipoint Technology for simultaneous connection to two Bluetooth devices Automatic volume adjust Active pairing for simple initial pairing automatically Single-mic noise reduction and echo cancellation for clear and crisp conversation Distinctive design