VicTec 18x52 Night Version Monocular Telescopes Optics Zoom Monocular Scalable Telescopic For Bird Watching/ Hunting / Camping / Kiking Armoring Outdoor Travel Super Clear Use waterproof design: the mirror is full of the high-purity nitrogen, waterproof and antifogging. You can use it in raining day and humid environment, and have no need to worry about this item. Dual Focus design: can look much longer distance and more distinct. With cylindrical shape design. The main part of the mirror body is metal material, and the outside shell is the high quality flexible rubber. With low-light-level night vision built-in design, it has clear vision when there is reflect light at night.