TX13 3 in 1 Portable Bluetooth 5.0 Digital Optical Coaxial Audio Transmitter with 3.5mm Jack for Bluetooth Speaker Headset Features: 1. Get rid of the shackles of various cables, whether you are sitting on a comfortable sofa or moving in the room, it can transmit music from TVDVD to Bluetooth speakerBluetooth headsethome stereo system, allowing you to enjoy rich private Music feast 2. Using Bluetooth 5.0 technology, supporting A2DPAVRCP protocol, which not only greatly improves the data transmission rate, but also ensures the stability of sound quality 3. With 3.5mm coaxial optical fiber input, suitable for TV, Blu-ray DVD, mobile phone, computer, etc. 4. Transmission distance up to 10 meters 5. Small size, easy to carry Specifications: 1. Bluetooth version: V5.0, Class II 2. Bluetooth chip: Jerry 3. Frequency range: 2.402GHz-2.480GHz 4. Bluetooth protocol: A2DPAVRCP 5. Power input: DC5V 6. Working temperature: -10-55 degrees Celsius 7. Size: 89x54x20mm 8. Package weight: 158g Packing list: Host x 1 Optical fiber x 1 Coaxial line x 1 Audio cable x 1 Charging cable x 1 Manual x 1