One headset works with all of your devices. iPhone, Blackberry (1 - 3.5 mm). Cordless/wireless phone adapter (1 - 2.5 mm). Computer adapter (2 - 3.5 mm). Comfortable, clear calls. Flexible ear loop for either ear. Adjustable mic. Make calls on your iPhone, Blackberry or wireless phone. Use for web chat and voice applications on your PC or Mac. Voice-Over-Internet: Compatible with Windows Live Messenger, Skype, Google Talk, AIM & Yahoo! Messenger. Highest quality sound for phone calls and voice-over-internet applications. PC/Mac compatible. Flexible earloop, wear on either ear. Adjustable mic. Y adapter for computer. Headphone. 2 - 3.5 mm. Cordless/wireless phone adapter. 2.5 mm. Compatible with many cordless and mobile phones. Compatible with iPhone, iTouch, Blackberry and portable audio players. Compatible with Windows Live Messenger, Skype, Google Talk, AIM, & Yahoo! Messenger. Made in China.