@somanycats I wouldn’t be surprised if the reviews are fictional since the product isn’t even on airefina.com and some of the site is in Chinese.
A 6" blade is small; kitchen knives are longer. I use a reciprocating saw on large branches. I prefer corded but the battery operated version probably uses the same battery as the cordless drill. Every time a large limb has come down I’ve wished that I had a chainsaw but most women don’t have the upper body strength to manage the kick back.