This review on Amazon says you can switch eyepieces.
https://www.amazon.com/Celestron-Hummingbird-7-22x50mm-Birder-Friendly-52307/dp/B01FRAJXZ0?th=1
"I have a number of spotting scopes. Some are pretty expensive. This little Hummingbird 9-27x 56mm scope has been a pleasant surprise. The first thing that I discovered was that It has an eyepiece collette that allows the fitting of regular 1.25" telescope eyepieces. I don't think that this was covered anywhere in the documentation. I have only tried a few eyepieces, so am not ready to render an opinion as to how effective these are. Only impression I have so far is that, because of the short focal length, some eyepieces introduce a fair amount of field curvature. As far as the scope with the included zoom eyepiece, I am very happy. The images are clear and it handles all the powers well. This scope is the most compact of any that I own, weighing maybe a pound. But the images are bright and and it is easy to focus. This fills the next step up from a pair of binoculars and it can even be handheld, tho resting it against something or using a tripod are best. All in all, highly reccommended."