Gateway LT21 Series Audio and Music, BoxWave [BlueBridge Audio Adapter] Bluetooth in Car Music Streaming Device for Gateway LT21 Series Wirelessly stream music from your smartphone to your car's stereo; Play Spotify, Pandora, or your favorite music Transform your stereo into a handsfree speakerphone for calls Connects to any stereo system with a 3.5mm AUX input jack Compatible with iOS, Android, Blackberry, and Windows smartphones Built-in battery provides 6 hours of use between charges; Includes micro USB cable to charge