Wireless Bluetooth Audio Adapter Product is shipped based on the color or size of the main image on the product page. 1. ADVANCED BLUETOOTH 4.1 RECEIVER: A solution for cars with non-Bluetooth functions, enjoy hands-free calls, GPS, and streaming music while driving. It also connects to older home audio systems and wired headphones via a 3.5mm aux cable/adapter to help you enjoy wireless audio. 2. CLEAR HANDSFREE PHONE CALL: Hands-free future makes calls super easy when driving, you can answer/hang up/reject calls and redial the last dialed number on this BT audio adapter. Enjoy wireless stereo music and no longer worry about missing any calls. 3. DUAL CONNECTIONS & WIDE COMPATIBILITY: Mini Bluetooth receiver adapter connected to two Bluetooth devices simultaneously, Bluetooth range up to 33 feet without obstacles. It is ideal for home or vehicle audio systems, compatible with most Bluetooth devices such as smartphones (both iPhone and Android), MP3, CD players, tablets, etc., and HFP. No need to tolerate the problem of signal interruption. 5. LONG PLAYTIME & QUALITY GUARANTEE: The Bluetooth adapter provides up to 12.8 hours of non-stop music streaming, radio, GPS, or hands-free calls and 250 hours of standby time.