Not connected. Try the preview.
Color
Fine controls
Effects
Audio sync
Delay audio to match the light. Available for files and browser tabs only. Adjust by ear and eye after the estimate.
Audio stays on your device.
Bluetooth control works in desktop Chrome / Edge and Android Chrome.
Color adjustment
Move left if yellow looks green, or right if it looks orange. The default was adjusted by eye.
Channel gains
Values are saved in this browser. Correction is off by default. White uses a separate LED channel and is not affected.
Connection help
Cannot connect, or keep losing the connection? The batteries may be depleted. Replace the full set with new batteries and try again. If it still fails, check Bluetooth permission and close other pages or apps connected to the lightstick.
Insert the batteries. In the Bluetooth dialog, select a device whose name starts with JFKJ to connect. Wait for the blue flashes to finish. Keep this page in the foreground while using browser effects.
If the device is missing, close other pages or apps connected to it. Check system Bluetooth and browser permissions, move closer, and retry. For iPhone / iPad, WeChat, or other mobile browser issues, see.
The light may stay on after disconnecting. To turn it off, use Turn off or the button on the lightstick.
Connection details
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