Bluetooth 5.0 Receiver Digital Optical Coaxial To Analog Microphone HD HDMI Wireless Screen Thrower 1. Input type: USB 3.5mm fiber optic coaxial Bluetooth 2. Output type: RCA 3.5mm HDMI 3. Shell material: aluminum alloy + plastic 4. Bluetooth version: 5.0 5. Transmission distance: about 15m 6. Remote control power supply: 2 AAA batteries (not included) 7. Weight: about 50g 8. Size: about 5 x 4.9 x 2.34cm Features: 1. Mobile phone one-key cast screen, support HDMITVmonitor 2. Dual screen 4.5G+5G, eliminate the original song, eliminate the original sound 3. Smart pre-muffled chip, suppress or eliminate background noise, improve the clarity of voice signals 4. With multi-function remote control, more convenient to use 5. Bluetooth 5.0, intelligent and more compatible 6. Lossless delay, high-definition sound quality transmission 7. USB intelligent playback, support USB device playback 8. 15 meters signal transmission, no obstacles, signal stability