The red dot finder is quite common among beginner telescopes. It simply reflects a red dot on the sky so you can easily focus on the object. For such a high-magnification telescope you may need a better finder such as a 6×30. But the red dot will prove enough for the beginning.
The focuser is a rack-and-pinion model. It is 1.25 inches in size and mostly plastic. It is surprisingly smooth and solid. It doesn’t bring up any complaints about any magnification range. It is a little stiff in the beginning but it loosens up in time. It will work well with any 1.25-inch eyepiece in the market.