AENMIL Super Clear Outdoor 10-90x25 Dual Focus Single-Tube Telescope Monocular, Day and Night Vision Telescope Optics Zoom Monocular Scalable Telescopic, 0.5M/ 3000M Multi Coated optics guarantee superior light transmission and brightness This product have dual focus capability (front and back adjustable zoom) Powerful, ultra-compact and ultra-lightweight, Single hand operation easy focusing Suitable for Golf, Camping, Hiking, Fishing, Bird watching, Concerts, etc. Note: It's Faint Night Vision telescope,need light. Cannot be used in all the dark environment.