USB Bluetooth 5.0 Receiver Stereo APTX-HD Low Latency Audio Adapter Features: The iron box Bluetooth receiver utilizes a Bluetooth 5.0 chip to ensure high-fidelity audio signals are transmitted to the home stereo system effectively. APTX low latency: Supports APTX low latency (APTX LL) for minimized delay. This compact Bluetooth audio receiver offers high-quality, synchronized sound with only a slight delay. Upon plugging into a power socket, the Bluetooth audio adapter can automatically power on and reconnect to previously paired devices (Note: This device does not include a USB power adapter. You may use other DC 5V power supplies). Easy setup: Simply connect the audio cable to the computer speaker or home stereo system, then pair it with a Bluetooth audio device (such as a smartphone or tablet). Note that this model functions solely as a Bluetooth receiver and not as a transmitter. Compact size, yet long range: Small enough to fit almost anywhere. The mini Bluetooth audio receiver suitable for home stereo can achieve a range of up to 164 feet (50 meters) outdoors with line of sight, and 50-70 feet (20-30 meters) indoors (barrier-free). Specification: Stereo coaxial output voltage: 2.0~2.2Vrms Headphone output: 2Vrms Headphone output impedance: 22 �� Bluetooth receiving distance: 10~15 meters (no obstruction) Bluetooth format: APTX, APTX-HD, SBC, AC Audio sampling rate: 48K 16bit Button: Bluetooth one-button play or pause Working voltage: 5V Working current: 150~250mA Specifications: Host size: 6.4*4.7*1.5cm USB cable length: 97cm Accessories: host + USB power cable + manual Color: black Material: aluminum alloy Package includes: 1* Host 1* USB power cable 1* Manual Note: 1. When using headphone output, only 3-plug headphones are supported; 4-plug headphones are not compatible. 2. If there is no response when connecting to the power supply, check whether the middle indicator light is flickering. If it does not light up or flickers, disconnect the power supply and USB cable.