Features: brand new and high quality Listen to music wirelessly: for Play audio entertainment from your smartphone or tablet. Enjoy music with perfect sound quality through the perfect sound system of your smartphone or tablet. Easy to set up: Just press a button to pair your smartphone or tablet with the audio adapter. Wireless range: No need to dock your mobile device with a reliable audio connection, it can receive music from 10-12 meters (30-40 feet) away. Suitable for most speakers, excellent sound effects: plug the adapter into any A/V receiver and any active speaker with a standard RCA or 3.5 mm jack. Uncompromising sound provides high-quality sound. for Play music on 2 speakers at the same time: With two connection options of 3.5mm and 2RCA, you can enjoy music on 2 speakers at the same for time. Support dual audio interface connection: Comes with 3.5mm and 2RCA audio interface, suitable for more devices. Long-distance wireless connection: effective distance up to 10 meters/33 feet, remote control of music playback. Support automatic power on/off: Use a charging cable to connect to your car or other power sources. When the car starts or has electricity, it will automatically turn on and automatically connect to the device you connected last for time. When the car is turned off, it will automatically turn off. Specifications: Material: Metal Weight: 82g Size: 5.5x5.5x2.2cm/2.17x2.17inch Cable Length: 75cm/29.53inch Color: Black Package Includes: 1x Audio Receiver note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.