Uses 2.4G technology Compatible with high-definition sound quality without transmission delay External antenna, better transmission effect Automatic connection at startup Supports RCA and 3.5mm port Input Supports RCA and 3.5mm port Output This product is a wireless audio transmitter that uses 2.4G technology Compatible with high-definition sound quality without transmission delay. The transmitter can transmit 2.0 analog stereo audio signal from RCA and 3.5mm audio interface to the receiver at a distance of 50 meters Compatible with listening. Using the Nsendato product can solve the problem of tedious use of repeatedly switching/setting the output audio format Compatible with the signal source and the problem of tangled cables. Therefore, it is widely used in home audiovisual equipment, schools, squares, electronic games and other places. The receiver can drive headphones. Supports two-way volume control. Wide range of power interfaces. Type-c power supply. Maximum transmission distance: 50M. RX power consumption: 5V/45mA. TX power consumption: 5V/150mA. RF frequency: 2400Mhz. Transmit power: 14DB SNR: 67DB. Frequency range: 20HZ-14.5KHZ. Maximum output level: 1.75Vp-p. Color: Black. Material: ABS. Package contents: 1 * Audio receiver. 1 * Audio transmitter. 2 * USB cable. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.