RX/TX Bluetooth 5.4 Transmitter Receiver 3.5mm AUX TV Home Stereo Audio Adapter+Features:-Equipped with the latest 5.4 smart Bluetooth chip, it does not lag and has better performance-1.44-inch LCD screen, with clear operation modes at a glance-Dual mode design, transmitting and receiving modes-Rich interfaces, compatible with various device connection ports, AUX audio input, audio output, coaxial input, fiber optic input, multi device expansion, stronger compatibility-Supports direct playback from USB flash drives and TF cards, plug and play-Shocking lossless sound quality, supports Bluetooth stereo DSP technology, supports high and low frequency adjustment-Bluetooth transmission distance radius can reach 20 meters, effectively covering the transmission range-Suitable for various Bluetooth free devices, making life more colorful-Product antenna design for more stable transmission signalsSpecification:Model: GT87Bluetooth version: 5.4Transmission distance: 20 metersFunction: Transmission, reception mode, U-disk TF card playbackConnection port types: AUX audio input, audio output, coaxial input, fiber optic inputSupport for expansion: USB flash drive TF card supports up to 64GB [not included]Power supply method: Type-C power supply [The product does not have a built-in battery and requires a power cord for power supply]Bluetooth frequency: 2.402-2.480GHzProduct size: (main body) approximately 101x90x94.7mmBluetooth microphone effective distance: 0.5~2MAutomatic reconnection: automatically reconnecting to paired Bluetooth devices when turned onScope of application: automobiles, tablets, desktop computers, laptops, speakers, amplifiers, projectors, etcProduct List:1 * Bluetooth adapter1 * 3.5mm audio cable1 * Fiber optic cable1 * Coaxial line1 * Power cord1 * Instruction Manual