Features: WD850B focuses on network- streaming media playback + high-end aptxHD wireless Bluetooth-compatible audio reception +AUX/optical/coaxial + U-disk lossless- playback. Wireless network- input (support wireless 2.4G- and wired- RJ45 connection to the router- network- port), Bluetooth-compatible input (Bluetooth-compatible5.0, support APTX- full system and manual switching), AUX- input, optical fiber input, coaxial input, U-disk playback. The WD850 can connect to the network- via a network- cable or Wi-Fi, allowing users to arrange- the location of the speaker more flexibly. In addition, the Wi-Fi function also allows multi-room playback capabilities to be more effectively utilized. It can be used with streaming media players such as WR320 under the AYNIO brand to achieve multiple group playback. Qualcomm-QCC3034 Bluetooth-compatible receiver, supports aptx-HD full range- of protocols, external Bluetooth-compatible antenna, the receiving distance can reach more than 15meters, and the connection is fast- and stable. Specifications: Material: Aluminum Alloy- Model: WD850B Adapter:UK/ EU/ AU/ US (Optional） \Bluetooth-compatible Chip: QCC3034 V55.0 WIFI transmission Protocol: Airplay-DLNA Frequency Response: 20Hz-10Khz Support protocols: such as networking Airplay-/Qplay-/DLNA/- Output：Optical output, coaxial output, AUX- outputx disk can support up to 64G-； Support format: mp2-/mp3/wma/wav/flac/aac-/mp4/m4a/aif/aifc. Standard DC12V1A Package Includes: 1PC Power Adapter 1PC Remote Control 1PC Audio Line 2PCS Antennas 1PC Coaxial Line 1PC Optic- Cable 1PC 3.5 to R/L Audio Cable 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 measur