I found this. Similar, but still not the same thing :-)
Think a small grandma sized version.
If you have outdoor stuff that you will be handling, such as tree trimming, you need this tool. It is so simple you could trust a 9 year old with it after only a couple minutes supervised. You would have to try something pretty strange to harm yourself with it accidentally. I thought it would probably just sit around. I was wrong, I use it every time I have any branch fall or need to take one down under 2 inches diameter.
Another thing to ponder is an electric chainsaw. This Scotts electric chainsaw is a decent brand for only $70 though it is not the one I own. For those who do not have much experience, it is very dangerous to climb a ladder or tree with a running chainsaw or to pull the pull cord while already on the ladder or in the tree. Pulling the cord makes people fall, and climbing with a running chainsaw, well, that can be bad in many ways. If you have an electric chainsaw on a cord, you can just unplug it while you get into place, plug it in, and there is no cord to pull. You are ready to go, click a switch or press a button. It reduces your risks significantly.
You will not use either of these to take down a redwood by yourself, but between them, for around $200, presuming you already own a ladder, you have all tree trimming up to about 12 feet high easily managed.
I imagine they'll have something like these: https://www.amazon.com/Decker-LP1000-Alligator-4-5-Amp-Electric/dp/B000BANMUY