7-21x40 10-30x50 10-30x60

Key Features：
● Levered Zoom Magnification
● BK-7 Reverse Porro Prism Design
● Anti-Reflection Fully Multicoated Optics
● Closed Bridge Configuration
● Grooved Center Focus Dial
● Tripod Mountable
● Fold Down Eyecups
● Rubber Armored Exterior
Overview:
The 7-21x40  Reverse Porro Zoom Binoculars from a compact and cost-effective handheld optic useful for a wide range of outdoor activities. The variable 7-21x magnification is ideal for intermediate to long-range bird watching, hunting, and sightseeing. A reverse Porro prism design and fully coated optics transmit detail-rich resolution with edge to edge clarity and excellent low light performance. The rubber armored housing helps protect your optics from moisture and light shock.For the nature enthusiast on a tight budget, the ergonomic design and complementing features  series binoculars deliver a comfortable user-experience and high quality images.
Optical Performance：
● Powerful 7-21x zoom magnification range
● Large 40mm objective lenses
● Traditional BK7 Porro prism design
● Anti-reflection multi-coated optics limit light loss and enhance contrast and color rendition
● 270' field of view at 1000 yards at 7x power
● Large 5.7mm exit pupil, at 10x, helps to avoid vignetting in low-light when pupils become dilated
Use and Handling：
● Convenient, ergonomically-placed zoom lever is easy to manipulate with right index or middle finger while looking through the binoculars
● Zoom indicators on right ocular clearly shows selected magnification for repeatability
● Large center focusing wheel
● Right-eye dioptric correction
● Fold-down rubber eyecups for comfortable use with or without eyewear
Construction Details：
● Nonreflective matte-black finish
● Protective rubber armoring provides a slip-resistant grip
● Tripod mountable with optional adapter
● Weight: 695 g
Performance: