Features:1.Unik 3D Surround Sound function: With the 3D O button you can switch to 3D mode to enjoy the surround sound with high fidelity from a normal O source. Its advanced internal chip takes care of the conversion to make it possible, using comfortable loss -free codes.2.AUTO ON: When you connect to Power, so it is very good to use in the car or other things you want it to have automatic features.3. Double device link: Pair your smartphone and tablet at the same time and stream music from either with optional stereo system that supports a standard outlet of 3.5 mm or RCA. Connect two Bluetooth devices at the same time to listen to music, make phone calls and more.4. Connect Two units: Support for connecting with 3.5 mm O port and 2 RCA O ports at the same time.5. Wireless music flow: Stereo streaming music for headphones and speakers that are not Bluetooth.6. Space saving design: Ultra compact and easy for comfortable use with a variety of devices.7. Super stable connection: Our Bluetooth O adapter is equipped with a Bluetooth 5.0 chip for steady interconnection, fast transmission and a wide signal area (33 feet). With 3.5 mm AUX port and 2 RCA ports, it can be connected to non-Bluetooth car systems, home stereo, wired headphones/speakers, amplifiers/home theater etc. Then you can enjoy wireless Hi-Fi music flow NOTE: Its only a Vorlo Bluetooth receiver, not a transmitter. So you couldnt use it for your TV, keyboard, mouse.8.AUTO-Connect: This Bluetooth receiver automatically connects to the last paired Bluetooth device when you turn on the next time.9. UPPGRADE-KEY button: Next song/volume up, previous song/volume down, multifunction button (MFB)10: Upgraded to support SD card games.11. Note: No built -in battery, so powered by USB charging.12.For wired speakers/power/power amplifiers/headphones/car kitSpecifications:Product name: 3D Bluetooth or recipientStarting parameter: DC 5VBluetooth version: V5.0+EDRBluetooth -Protocol: A2DP/AVRCPBluetooth distance: 15 metersInterface: RCA/AUXFrequency range: 10Hz-20KHzSignal / Noise ratio: 110dbImpedance: 75Product size: 70mm*70mm*34.5mmPackage included: 1x 3D Bluetooth o Receiver