Feature: C. Bluetooth-compatible transmission: When the green is ON, press and hold the MODE button to enter the Bluetooth-compatible search, the green indicator light flashes quickly, it can automatically match, Bluetooth-compatible earphones / speakers and other devices, the green light is stable after pairing is successful. Product Name: Adapter Bluetooth-compatible version: Bluetooth-compatible 5.1; Bluetooth-compatible protocol: A2dpavctpavttpavrcphfpsppsmpatt-gapgattrfcommsdpl2Cap; Music format: MP3, APE, FLAC, AAC, MP4, M4A, WAV, AIF, AIFC; Signal-to-noise ratio: &ge;90dB; Bluetooth-compatible transmitter: 1. Press the mode button to turn on the Bluetooth-compatible transmission mode, and the green indicator light flashes slowly (connected). The last successfully paired Bluetooth-compatible headset/speaker will automatically reconnect. 2. For new Bluetooth-compatible earphones, press the 3s mode button, the green indicator light will flash quickly. To enter Bluetooth-compatible search mode, automatically find and connect new Bluetooth-compatible headphones/speakers. If it is not the correct Bluetooth-compatible headset, keep pressing the &quot;Mode&quot; button to find and pair the next Bluetooth-compatible headset. 3. Press and hold the mode key to go from (A) to (B), (B) to (C), (C) to (D). If you need to reconnect the Bluetooth-compatible headset (A), disconnect and connect the USB cable; Green light blinking slowly: Reconnect (automatically connects to the latest Bluetooth-compatible headphones/speakers); Fast green light: Bluetooth-compatible search in progress (search for and connect new Bluetooth-compatible devices); Green light stays on: it&#39;s successfully connected and paired. (wait 10 seconds for sound transmission) Bluetooth-compatible switching: Long press the mode button to automatically search and connect to the next Bluetooth-compatible device; Notes: Different Bluetooth-compatible headsets/speakers use different schedules and protocols to search for a connection, and the timing will vary. If the search fails, please turn on &quot;Bluetooth-compatible&quot; to verify. Turn on the Bluetooth-compatible headset, unplug the USB cable and reconnect; Packing list: 1 x Bluetooth-compatible adapter 1 x USB cable 1 x instruction manual 1 x packing box Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don&#39;t mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks. <div class="panel panel-info"><div class="panel-heading" style="font-weight:bold;">IMPORT: THIS ITEM IS SHIPPED FROM CHINA. PLEASE EXPECT UP TO 25 DAYS FOR DELIVERY</div></div>

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