Yes, they are suitable for quick stargazing.

Absolutely. The clarity of the lens is excellent and focusing is particularly simple. Perfect for bird watching.

Yes, it is clear enough for bird watching.

It can resist light water, but it cannot be used for a long time in heavy rain or soaked in water.

10x42 means that the binoculars have 10x magnification (compared to the naked eye) and an objective diameter of 42mm. 10x42 are best for bird watching, hunting, concerts, sporting events etc. They have higher magnification, good light quality but are still easy to hold steady. 12x binoculars are difficult to hold steady and 10x50 binoculars allow more 8x binoculars have lower magnification, lower light and lower image quality. In our professional experience, most people prefer the 10x42.