It has a 76mm aperture. Surprisingly, it is enough to see Jupiter and its 4 Galilean Moon’s, Rings of Saturn and a good amount of detail on the Lunar Surface. With a good eyepiece, you can also see Jupiter’s stripes. But unfortunately supplied eyepieces are not good enough. You may wish to change them with better ones in the future.
The mount is great. It moves up, down, left and right which is as simple as it gets with telescope mounts. It is rock solid and the base is Teflon so it has a really smooth motion.