[4-in-1 Digital to Analog Audio Converter with Bluetooth Transmitter] Converts optical or coaxial digital audio signals to analog L/R and 3.5mm outputs. Enables wireless audio transmission via Bluetooth to Bluetooth headphones or speakers. [Bluetooth V5.1 Transmitter] Features Bluetooth 5.1 technology for stable, lossless audio transmission. Offers a wireless range of up to 30m (98ft). Supports connection to Bluetooth headphones and speakers. [Device Upgrade Function] Allows older audio devices such as speakers and TVs to be upgraded to Bluetooth-enabled systems. Connect via AUX port to enable Bluetooth functionality on non-Bluetooth devices. [Clear Audio Transmission] Built-in high-performance DAC supports sampling rates of 32 kHz, 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz, delivering high-fidelity sound. Supports 24-bit SPDIF input for both left and right channels with minimal audio/video delay. Equipped with a dedicated Bluetooth antenna for stable signal transmission. [Plug and Play] No drivers required. Easily connects high-quality digital audio sources such as TV boxes, Blu-ray players, game consoles, and HDTVs to analog amplifiers, headphones, or Bluetooth receivers. Color: Black Material: Aluminum alloy Package Contents: 1 x Bluetooth Transmitter Receiver 1 x Fiber Optic Cable 1 x Audio Cable 1 x USB Cable 1 x Remote Control 1 x English Instruction Manual Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display settings may cause slight color variations between the product image and the actual item. Measurement tolerance: +/- 1-3 cm.