Using the Lezyne Macro Plus GPS is easy. First, charge it fully before the first use. You can pair it with the GPS Ally phone app via Bluetooth to access all the advanced features like turn - by - turn navigation and live tracking. If you want to use external sensors, just pair them in the settings. When using it outdoors, make sure the device has a clear view of the sky for accurate GPS signals. As for maintenance, keep it dry. Wipe it with a soft cloth if it gets dirty. Avoid exposing it to extreme temperatures. When not in use, turn it off to save battery. If you have any issues, check the firmware and update it if necessary.