Features: -Adopt Bluetooth 5.0 chip, with LED digital display, the working status is clearly visible;  -Core functions: Bluetooth reception, Bluetooth transmission, FM transmission, TF card playback, card reader, external sound card;  -Support AUX+FM dual output;  -FM transmission, adjustable frequency (87.5~108MHZ), stable signal, no noise and interference;  -TF card reader function, can copy data on the computer and other operations;  -Computer external sound card function;  -Bluetooth effective transmission distance of 10 meters;  -Built-in high-quality decoder chip, high-definition stereo sound quality (supporting similar product sound quality comparison);     Specifications: Bluetooth version: Bluetooth V5.0;  Transmission distance: barrier-free 20-meter signal;  Interface type: 3.5mm interface/USB interface;  Input parameter: DC 5V/2.1A (Max);  Support agreement: A2DP/AVRCP;  Product size: about 75* 25* 15mm;  Usage: USB power supply plug and play (free drive);  Product color: white, black;  Product material: high strength PC+ABS;  Product weight: about 15g;  Basic functions: Bluetooth reception/transmission/TF-card playback/FM transmission (frequency adjustable)/card reader/call/listening song/navigation;  Applicable equipment: all kinds of speakers, cars, desktops, notebooks, TVs, amplifiers, projectors, etc;     Package Included: 1 X Bluetooth Transmitter&Receiver;  1 X 3.5MM Audio Cable;  1 X User Manual;