TX13 is a Bluetooth adapter with optical fiber, coaxial, 3.5mm Bluetooth transmitter and digital to analog dual-use.It uses USB5V power supply. It will enter the search pairing state when the power is turned on, and the red light will flash quickly. It can wirelessly transmit music from mobile phones, walkmans, TVs, computers and other devices to your Bluetooth receiver,Stereo Bluetooth headsets, Bluetooth speakers and other equipment. It can be directly converted into a 3.5mm analog signal through the optical fiber coaxial digital signal of the productThe optical fiber coaxial audio input 3.5mm output is connected with speakers, power amplifiers and other equipment through audio cables to realize digital-to-analog conversion.Switch the interface light by pressing the button to switch the input interface.Product name: TX13 Bluetooth transmitterBluetooth version: V50, Class IlFrequency range: 2.402GHZ-2.480GHZPower input: DC5VAudio interface: optical fiber, coaxial, 3.5mmWorking temperature: -10-55 degreesColour: blackMaterial: ABSSize: 89 x 54 x 20mmPackage Contents:1 x Bluetooth adapter1 x fiber optic cable1 x coaxial cable1 x audio cable1 x charging cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.