Features: 1. Bluetooth receiving adapter, supporting audio transmission through Bluetooth pairing with mobile devices (such as phones and tablets). Make the old speaker device work like a Bluetooth device. 2. Bluetooth transmitter adapter, you can use it on TV/computer/TV box/PS/switch. 3. DAC converter, supporting signal conversion from digital optical coaxial audio to RCA 3.5mm or R/Analog audio. 4. USB playback, no driver required, plug and play, supports MP3/APE/FLAC/WAV/WMA music formats. 5. TF card playback, no driver required, plug and play, supports MP3/APE/FLAC/WAV/WMA music formats. 6. Remote control, can use infrared remote control to control adapter, convenient to use. 7. External antenna enhances signal and can achieve an unobstructed transmission distance of up to 30 meters. 8. No delay, lossless decoding technology, enjoy HIFI sound quality. 9. Receiver mode is suitable for: car kit/wired speakers/home speakers/speaker power amplifier/headphones, etc... 10. The transmitter mode is suitable for: TV/computer/projector/amplifier/TV box/Bluetooth earphones/headphones/Bluetooth speakers, etc... 11. DAC Audio Converter: SPDIF/Digital Optical Toslink/Coaxial to 3.5mm AUX, suitable for TV/computer/laptop/projector/power amplifier/TV box/for PS5/for PS4/for PS3/DVD, etc. Specifications: Product Name: 6 IN 1 DAC Bluetooth Audio Adapter Bluetooth version: V5.3 Bluetooth distance: 30 meters (barrier free) Operation mode: button+remote control Input interface: fiber optic/coaxial/AUX/USB/TF/Bluetooth Output interface: 3.5mm AUX audio interface Sound mode: bass, normal, treble Frequency response: 20Hz~24Khz Memory expansion: Supports up to 64GB Micro SD card (not included) Sampling rate support: 33/44.1748/96Khz/16/24bit Bluetooth protocol support: A2DP/AVRCP/HFP/HSP USB/TF playback: MP3/APE/FLAC/WAV/WMA, etc Supported devices: mobile phone/computer/TV/projector/amplifier/set-top box/PS4, etc Battery capacity: 1100mAh Working hours: 12 hours Input power supply: DC5V-1A Product Material: Metal Product size: 86 * 60 * 22mm Product color: gray Package includes: 1 * Host (with battery) 1 * Remote control (with CR2032 button battery) 1 * User manual 1 * Fiber optic cable 1 * Coaxial line 1 * 3.5 audio cable 1 * AV audio cable 1 * TYPE-C power supply line