M6 NFC Bluetooth 5.0 Receiver & Transmitter & FM 3 In 1 Adapter(Black) 1. Working voltage: DC 5V500mA 2. Bluetooth version: V5.0+EDR 3. Frequency response: 10Hz-20KHz 4. Battery capacity: 3.7V500mAh lithium battery 5. Transmission distance: about 15 meters without barriers 6. Power supply mode: Micro USB interface 7. Music format: MP3APEFLACWAVWMA 8. Frequency range: 2400-2483.5MHZ 9. Peripheral support: U diskTF card 10. Bluetooth protocol: HFPA2DPAVRCP 11. Interface type: AUX+RCA+coaxial+optical fiber 12. Basic functions: Bluetooth receivingtransmitting, LED digital display screen, NFC connection, infrared remote control, call, navigation, listening to music 13. Support equipment: mobile phones, tablets, computers, TVs, cable speakers, power amplifiers, projectors, mixers, etc. 14. Packing list: host x1, Micro USB charging cable x1, 3.5mm audio cable x1, red and white RCA lotus cable x1, remote control (with button battery) x1, manual x1 15. Weight: about 75g 16. Size: about 9.2x6.5x2 cm Features: 1. The appearance is exquisite, exquisite and compact, easy to carry, the surface is made of fireproof PC material, high-gloss paint process, the base is equipped with a silicone pad, which is non-slip and wear-resistant 2. Using Bluetooth 5.0 chip design, stronger compatibility and stability 3. 3 in 1 design of Bluetooth receiver (RX), Bluetooth transmitter (TX) and FM transmitter 4. High-definition LED digital display, working status and Bluetooth mode are clearly visible 5. Built-in digital to analog chip, multiple interface options, support digital optical fiber, coaxial, AUX, RCA interface 6. NFC function, mobile phone can be connected with one touch 7. Cool breathing light, redblue color, soft and not dazzling 8. Support USB (U-disk), TF card playback and transmission 9. Support FM transmission, and the frequency can be adjusted from 87.5~108 10. With remote control, support infrared remote control of about 5-8 meters, easy to operate 1