1,Applicable to all speakers with U disk jacks, as long as your speakers support U disk playback, you can output audio from the USB port. 2,Support wireless 0, support A2DP, AVRCP, AVDTP, HFP and HSP. Receiving distance is not less than 10M. 3,Speaker with an AUX port can be connected to the AUX port via an audio cable to play music. After the mobile phone is successfully paired wirelessly, you can select music through Wireless to play in the sub‑menu. 4,Compact size, lightweight and portable, easy to carry and store, which can be carried anywhere you want. 5, ABS shell, sturdy, anti-corrosion and durable, which has long service life, not easy to be damaged. 1 x Audio Cable1 x Receiver Item Type: Wireless Dongle and Wireless Audio ReceiverShell Material: ABSPower Supply: USB 5V power supplySupport Wireless 5.0Support A2DP, AVRCP, AVDTP, HFP and HSPOutput: USB port 3.5mm audio interfaceReceiving Distance: No less than 10M/ 32.8ftOperating Steps: 1. Insert the wireless dongle into the USB docking station of the player with USB audio profiles. 2. Turn on the player, the red LED indicator of the dongle will flash. 3. Open the wireless player, search for ID: BT-118, and then match. 4. If the pairing is successful, the content of the wireless player will flow to the USB audio player. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.