USCAMEL 13x50 Monocular High Power Scope Powerful Telescope Big Eyepiece for Bird Watching without Reticle Low-light night vision features a wide field of view by faint light, starlight or moonlight. Note:It's Faint Night Vision telescope,need light. Cannot be used in all the dark environment. 50MM large objective lens, high light transmittance, clear and bright image, no color difference, outstanding glimmer effect High quality all-glass optics - objective and ocular lenses. One solid focusing ring. Single hand operation. Multi-coated ultra-clear film FMC broadband,bright color transparent, high transmittance, no color difference