Features 1. The barrier free transmission distance can be up to approximately 20m / 65.6ft with stable signal and low delay. 2. Supports multi-device expansion, Bluetooth receiving mode, and optical fiber coaxial digital to analog conversion. 3. Equipped with Bluetooth 5.0 chip for low power consumption, high speed, and smoother music experience. 4. Delivers HiFi sound quality, supports lossless music playback, and enables U disk playback with plug-and-play functionality. 5. Constructed from high-quality aluminum alloy for durability and extended service life. Specification Item Type: Bluetooth Receiver & Audio Converter Model: B55 Material: Aluminum Alloy Bluetooth Version: V5.0 Frequency Range: 10Hz-20kHz Signal To Noise Ratio: >110dB Power Supply Interface: Type C Output Interface: 3.5mm Audio Impedance: 75 Transmission Distance: Approx. 20m / 65.6ft Input Voltage: DC 5V Performance: HiFi Level Package List 1 x Adapter 1 x Audio Line 1 x RCA Line 1 x Audio & Video Line 1 x Data Line 1 x Coaxial Line 1 x Manual