Bang & Olufsen EarSet 2 Bluetooth Mobile Device (Right Ear) High-fidelity earphone headset made to fit your right ear, and includes a 3 year manufacturer's warranty Specifically designed air vents to ensure true voice reproduction and a high-fidelity loudspeaker system microphone ensures optimum sound quality B&amp;O has added 2 microphones, with filters to help reduce or cancel extraneous noises that distort both incoming and outgoing signal Compatible with all devices that are Compatible with Bluetooth version 1.1 or higher and headset profile 1.1 and hands free profile 1.0 NOTE: This product is not compatible with iPhone 3GS