This monocular has high magnification (up to 55 x) but the field of vision that finds too limited to such a level (21). Indeed, the slightest movement, however small it prevents you to observe properly. I strongly recommend to have a suitable tripod or lean on something to watch in this monocular when set to 55x. In magnification 15, for cons, no worries. The quality of the optics is correct, its tiny size that you can take it with you anywhere (it fits in the palm of hand). With such an affordable price, I can only recommend!