Features: brand new and high quality CSR8675 Bluetooth-compatible module, support native 24BIT, support APTX-HD. Coaxial and optical fiber output. Aluminum chassis, HiFi components. Digital output has chip and digital isolation transformer. Nobsound Original software development. Multiple independent voltage regulator function +CLC filter, external mobile phone charger. Specifications: Bluetooth-compatible Version: 5.0 Color: black, silver (optional) PCB size: approx. 86x70x197mm/3.39x2.76x7.76in Package Includes: 1 Bluetooth-compatible 5.0 Receiver note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.