Michron is a device that plugs into your camera and allows you to take timelapses. This kind of device is called an intervalometer. Michron is special because it has no buttons or screens; instead the user interface is the Michron App on your smart phone (Android or iPhone).
Once you’ve created your settings in the app, upload them by plugging your phone into Michron with the programming cable. After you have uploaded your settings, you can disconnect your phone. Michron will perform completely on its own. Once Michron is plugged into the trigger port, it will tell your camera to take photos according to your settings. And don’t worry, Michron’s battery has a life of over 2500 hours, meaning you will probably never have to replace it (and if you do, it’s easy to replace).