How to buy a bird watching mirror, with the gradual acceptance of ecological environmental protection, bird watching activities are also driven up, bird watching mirror is the best equipment for bird watching, so how should we buy a suitable for their own bird watching mirror? In general, the telescope is divided into two kinds of binoculars and monoculars, it is recommended that if you are just starting to contact the telescope, it is best to choose binoculars, because the multiple of the monoculars is high, large volume, heavy weight, and high price, you must use the Angle frame when using.