Qualcomm BluetoothBluetooth chip: QCC5125Bluetooth protocol: LDAC/ adaptive/-HD/-LL//AAC/Bluetooth sampling rate: 44.1khz/48khz/96khz (the highest)Bluetooth sampling bits: 16bit/24bit (the highest)Bluetooth version: version 5.1Decoding chip: SA9227External Bluetooth antenna20 meters long distance transmission(in the without interference)Plug Type:EU Plug,it applies to Indonesia, , , , and so on.Material: Aluminum alloycolour: blackPackage Contents:1 x LDAC Audio Recorder1 Adapter1 x Fiber Optic Cable1 x Audio CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.