Description:This is a new Compact Pocket-Sized 15-70x21 Monocular Telescope、 which has the mini shape and uses delicate design. And、 it is especially designed for people who want to see the world more clearly and closely and can give you a more beautiful and closer world. Moreover、 it has some features such as、 high transmittance、 high resolution ratio、 simple operation、 etc. You can take it wherever you go、 and it will give you a wonderful world. This item is perfectly suitable for travelers.Specification:Size: 106mm x 32mm x 32mmPackage weight: 3.7oz/105Magnification: 15-70 XObjective lens aperture: 21mmObjective caliber: 22mmView angle field: 2-0.9??Lens Material: Bk4The viewing filed: 83m/1000m AT 7XExit pupil diameter: 3mm AT 7XDistance of exit pupil: 14.8mmRelative brightness: 12.96Dusk index: 13.2Coating film: FGMC (have no the problem of chromatic aberration、 and has the clear imaging)what's include:1*15-70 x 21 Mini Adjustable Monocular Telescope1*Clean cloth1*Carrying bag1*Carrying strap