ITEM NAME:Coaxial Optical Fiber AUX Stereo Bluetooth 5.0 Transmitter Hifi Wireless Audio Description: It is a dual-purpose adapter with optical fiber. 3.5mm transmission and digital-to-analog conversion. It uses USB 5V power supply. When it is turned on, it will enter the search and pairing state, and the red light flashes quickly. It can transfer music from mobile phones, mp3, TV, computers and other devices to your receiver, stereo headset, speakers and other devices. Can be directly converted into 3.5mm analog signal through the fiber coaxial digital signal, fiber coaxial audio input 3.5mm output and speaker, power amplifier and other equipment connected by audio cable to achieve digital analog conversion. Switch the interface light through the button to switch the input interface. Specification: version: V5.0, Class II protocol: A2DP AVRCP Power input: DC5V Size: 89 * 54 * 20mm How to Use: 1: Connect the USB cable to the 5V charger, the product starts to enter the red light flash mode to search, turn on the speaker headset. Automatic pairing is carried out, the red light is on when the pairing is successful, and the product selects the optical fiber or coaxial 3.5mm audio cable to connect to the TV / computer through the button switch interface. The blue light corresponds to the interface. The TV or computer must be set in external speaker mode. 2: Digital to analog signal, connect TV fiber or coaxial connection product, 3.5mm audio cable to speaker. It can easily solve the trouble of TV without 3.5mm audio port without speaker. Package Includes: 1x transmitter 1x Optical fiber cable 1x Coaxial cable 1x Audio cable 1x Charging cable 1x Manual SKU: FUZ0017561668033576.Automatic pairing is carried out, the red light is on when the pairing is successful, and the product selects the optical fiber or coaxial 3.5mm audio cable to connect to the TV / computer through the button switch interface.