Bluetooth 5.0 Decoder Product Specifications Power Supply: DC3.7-5V Rated Input: DC5V /500MA Inputs Supported: Bluetooth, U disk, 3.5MM external audio Dimensions: 88 x 25MM Features Color digital screen displays music spectrum Supports MP3 and APE lossless decoding Bluetooth 5.0 with 0-20 meters range (barrier-free) 10M infrared remote control for easy switching FM radio frequency spectrum display TWS (True Wireless Stereo) support TWS Wireless Interconnection To interconnect two Bluetooth 5.0 decoders (model AVN-757), follow these steps: Turn on both devices and enter Bluetooth mode. Press the play button twice on one device and immediately connect to the other upon hearing the prompt. Activate Bluetooth on your mobile phone, search for "AVN-757" and click to connect for stereo sound. Key Functions POWER: Standby ON/OFF MODE: Cycle through input modes: USB—SD—BLUE—FM—LINE PREV: Select previous song or radio station; rewind in USB/SD modes NEXT: Select next song or radio station; fast forward in USB/SD modes VOL+ / VOL-: Increase or decrease volume REP: Enter loop modes, including single, folder, random, and all loop STOP: Stop playback in USB/SD card mode MUTE: Mute and unmute audio EQ: Sound field mode selection: NORMAL, BASS, ROCK, POP, JAZZ, CLASSIC, CUR PLAY/PAUSE: Play or pause media; auto-search radio stations 0~9: Direct selection of tracks and radio frequencies Package Includes 5 x Bluetooth Decoder 5 x Remote Controller