I have i4 air smartwatch
How to install custom watch faces
Download the file of the watch face you want…extract the files. connect your watch to PC copy the files in your watch storage in a folder named as ClockSkin C&S capital…n you are done.
If you are on a Mac, download Android File Transfer for Mac https://www.android.com/filetransfer/
Connect your smartwatch using a USB port. The app will most likely launch when it detects your watch. If not, go to Android File Transfer in your Applications and launch it. You should get a window of your root level files on the watch.
If there is not a directory/folder named ClockSkin, create one. To create a new folder, go to the File Menu and select New Folder. You must name it ClockSkin exactly as typed. It must be typed capital C and capital S. ClockSkin.
You can the open the ClockSkin folder you just created by double clicking on it. You may then copy your dowloaded watch face files directly into it. You can copy multiple folders/watchfaces from your Mac directly to the ClockSkin folder. They should appear right away once installed.
@_blakcops we have a YouTube channel for exactly this kind of thing here