Using your HYDRO Square Marine Waterproof Audio Receiver is super easy. First, mount the receiver in a suitable place in your application. It doesn't take up much space, so you can find a spot easily. Connect the receiver to your amplifier using the provided outputs. If you want to use Bluetooth, pair your phone or tablet with the receiver. Once paired, you can control the music playback without touching your phone, and the signal can reach up to 35 feet away. You can also use the AUX input or USB slot to connect other audio sources. When using the USB slot, your device will get 1A charging while streaming. Some things to keep in mind: The wireless range may vary depending on conditions, so don't expect a full 35 - foot range all the time. Make sure the voltage supply is within the 12 - 14.4V DC range. As for maintenance, since it's IPX6 waterproof, it can withstand some water exposure. But try to avoid long - term submersion. Keep it clean by wiping it with a soft, dry cloth. That's all you need to know to enjoy your audio receiver!