PowerSeeker 70 has an f/10 optical ratio. A refractor above f/7-8 is pretty good since, as you increase the focal ratio with refractors, chromatic aberrations decrease. f/10 is well above this limit and gives great color accuracy. Image defects are not completely gone, but they are so mild a beginner wouldn’t even notice them.
Planetary detail, which is the area refractors are built for, is pretty solid for a 100$ telescope. Rings of Saturn are easily distinguishable from the planet, 4 Galilean Moon’s of Jupiter, and it’s cloud bending are detailed with contrast. You can also get an image of the Great Red Spot. With expensive eyepieces, you can get views of Venus or Mars, but they are in the range of “difficult to see” objects.
The Moon is magical to view with most telescopes. With this one, it is no different. The surface looks sharp and bright.
Deep space performance is not that great. For that, you should get a tabletop Dobsonian, such as the Orion SkyScanner 100 or Zhumell Z100.
You can get images of brighter Messier objects and popular deep space objects such as the Andromeda Galaxy, Orion Nebula, or Hercules Star Cluster. As long as the object you are trying to see is pretty bright, you are going to get a good view.
The widely popular “70mm refractor” optical design is properly done in this telescope.