Features: BT 5.1, supports a variety of high-definition BT formats: Adopts the Qualcomm QCC5125 BT receiver chip, supporting AAC / SBC / aptX / aptX_LL / aptX_HD / LDAC audio encoding BT format. CS8406 conversion chip: Adopts high-performance CS8406 digital audio conversion chip, and convert BT signal to high-quality Optical / Coaxial signal output. ES9018K2M decoding chip: Adopts high-performance ES9018K2M decoding chip to provide analog signals with high S/N and low THD. Support computer USB DAC: Support to connect the computer as a USB sound card, plug and play, and convert it into high-quality Coaxial / Optical / Analog signal output. High-strength aluminum alloy shell: The shell is made of high-strength aluminum alloy material, and the external removable high-gain BT antenna ensures stable and lossless signal transmission. The 1.3-inch OLED display shows the BT information at a glance: Using OLED display screen, BT connection status/coding format/sampling rate/song name and other information can be displayed intuitively, and working status can be known at any time. Specifications: USB Interface: Type C Power Input: DC 5V / 1A Display: OLED, 128 * 64 pixels BT Specification Version: 5.1 BT Chip: QCC5125 BT Audio Support Formats: SBC, AAC, aptX, aptX_LL, aptX_HD, LDAC Transmission Distance:About 10 Meters THD + N: Optical Output: 0.00087% Coaxial Output: 0.00087% AUX OUT: 0.07% Output Level: Optical Output: 0.5Vp-p Coaxial Output: 0.5Vp-p AUX OUT: 2.5V Size: 10.5 * 7.6 * 3.4cm Package Size: 15.5 * 11.5 * 6.5cm / 6.1 * 4.5 * 2.6in Package Weight: 284g / 10.0oz Package List: 1 * Audio Receiver Converter 1 * TYPE-C Cable 1 * BT Antenna 1 * Manual