Seamless Magnification Control: A simple twist of the zoom housing adjusts focal length from 7mm to 21mm; Ideal for planetary clusters, lunar details, and deep-sky nebulae observation
Extended Eye Relief for Eyeglass Users: 16 to 33 mm adjustable eye relief accommodates eyeglass wearers with zero vignetting; Foldable soft-rubber eyecup ensures comfortable viewing at all focal lengths
Versatile for All Observers: Wide 30 degree to 43 degree apparent field of view adapts to planetary and deep-sky targets. Precision stepless zoom mechanism outperforms fixed focal length eyepieces
Product Dimensions: External dimensions 265 mm/10.4 in long; 175 mm/6.9 in wide; 85 mm/3.3 in high; weight 1.34 lbs; Solid foam lining inside provides plenty of room for your accessories and protects your valuables from shocks and bumps on the road
Modern Design: Cleaner design and easier to open; The cool latch can be opened with one hand with less force; For extra security you can also add locks to the extra keyholes so that your belongings are better protected