100% new. Perfect audio transmission function. * Compatible with virtually any Smart Phone and MP3/ MP4. Plays any Samsung Galaxy S III/IV/3/4. * Provides hands-free conversations through your car speakers. (need to connect with 3.5mm audio) * Full frequency range design effectively avoids interruption. USB output charging for Mobile Phones, GPS, and other devices. * Accessory ONLY. Phone not included. Samsung© is a registered trademark in the United States or other countries. Samsung© does not endorse use of these products.