These things will cut through anything. Dog, cat, horse, goat, and humans. They last forever and nothing works better. If they ever seem to stop working, it's because you have a hair rolling between the blades. Take it off, rinse under water, dry, oil, you're back in business.
Discussion
Corded Wahl clippers are the best. I’ve just got a non-pro model and they’re easy to use and maintain. Plug in, use, unplug, disassemble, clean, reassemble, all done.
No bluetooth, no app, no smart charging battery, no camera, no wearable accessories that tell you when it’s time for a haircut.