Bluetooth 5.1 adapter with stable signal transmission and low latency, offering a wireless range of up to 20 meters in open space. Features an external antenna to enhance signal reception. Enables connection to older speakers or amplifiers, converting wired audio systems into Bluetooth-enabled devices for convenient wireless audio streaming. Digital-to-analog audio converter with multiple input options: 3.5mm auxiliary, coaxial, and optical fiber. Equipped with RL and 3.5mm audio outputs, compatible with TV, PC, projector, amplifier, and TV box. Supports U disk playback functionality. Includes bass mode and volume control for customized audio experience. Supports various audio formats including WAV, FLAC, MP3, APE, and MAV. Product Name: Bluetooth Receiver and DAC Audio Converter Bluetooth Version: 5.1 Modes: Coaxial, Optical, U Disk, Bluetooth Power Input: 5V Color: Black Material: Aluminum Alloy Package Contents: 1 x Bluetooth 5.1 Digital Analog Audio Converter (110x25x85mm / 4.3x0.98x3.34in) 1 x Coaxial Cable (80cm / 31.5in) 1 x Optical Fiber Cable (80cm / 31.5in) 1 x 3.5mm AUX Audio Cable (80cm / 31.5in) 1 x USB-C Power Cable (80cm / 31.5in) 1 x Remote Control (battery not included, requires 2 AAA batteries) 1 x English User Manual Note: The package includes only the items listed above. Other accessories or devices shown are not included. Note: Slight color variations may occur due to lighting and display differences. Measurement tolerance: +/- 1-3 cm.