Yes, recordings are stored as 1 minute unencrypted mp4 files in folders sorted by the hour. You can easily work with them on almost any modern PC or smart device.
You need an internet connection to boot the cam up so it will authenticate, but not after. If you have cell coverage at the location, briefly use your smartphone as a hotspot to get the cam up and running. Test it by viewing the cam with the Wyze phone app. Then can turn off the phone hotspot and the cam will record to the SD card - as long as your settings are correct.
You may want to plug the cam into an UPS, because any time the cam loses power, you will have to do the whole authentication thing over again.