FLYZOE 30x60 Folding Bionocular Telescope The binoculars telescope provides sharp clear optical performance at an unbelievable value. It has high magnification and it is also compact and lightweight; Red membrane fully coated optics for increased brightness; Central adjusting knob assists to rapid regulate vision definition, diopter adjustment for fine focusing; Can be used for both day and night (low-light-level night vision, can't see anything in complete darkness). Ideal for birding, travelling, sightseeing, hunting, observation of sporting activities and concerts, etc.