Product Features: 1.Auto On:When you connect to the power, So its very good for to use in car or other you want it have auto on functions. 2.Dual Device Link: Simultaneously pair your smartphone and tablet and stream music from either one with any stereo system that supports a standard 3.5mm or jack.Connect two Bluetooth devices at once to listen to music, make phone calls, and more. 3.Connect two devices: Support to connect with 3.5mm audio port and 2 audio port at the same time. 4.Hands-free Calling and Navigation Broadcast: A built-in microphone for hands-free calls One simple button to answer or redial or hang up or reject calls. Besides, the Bluetooth car adapter supports broadcasting voice notification from existed navigation App, you don't need to look down the phone to safe driving. 5.Wireless Music Streaming: Stereo stream music to non-Bluetooth headphones and speakers. 6.Space-Saving Design: Ultra-compact and for convenient use with a variety of devices. 7.Super Stable Connection: Our Bluetooth audio adapter is fitted with a Bluetooth 5.3 chip for steady pairing, fast mission and a wide signal range (33 feet). With the 3.5mm AUX port and 2 port, it can be connected to non-Bluetooth car audio systems, home stereo, wired headphone or speaker, Amplifier or Home Theater.etc. Then you can enjoy wireless Hi-fi music streaming! Note: It's a vaolro Bluetooth receiver only, not a mitter. So you couldn't use it for your TV, keyboard, mouse. 8.Auto-Connect:This Bluetooth receiver automatically connect to the last paired Bluetooth device when you turn it on time. 9.3-KEY: Next song or Volume Up, Previous Song or Volume Down, Multifunction Button() Material:Plastic colour: Black Package Contents: 1 x Bluetooth 5.3 audio receiver 1 x USB Cable 1 x Audio Cable 1 x Cable(Note: Random color, don't accept the specified color.) (Wiring colors are shipped randomly, no specification is Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.