outdoor telescope 7-21X40, zooming
Product Description
| zoomable telescope 7－21X40 |
| model:7－21X40 |
| filming：blue film |
| Lens magnification:7-21 |
| object lens diameter:40mm |
| Type of Prism: Paul/ K9 |
| Exit pupil diameter:5.71mm |
| Exit pupil distance:13.4mm |
| Field of view:55M/1000M |
| Relative brightness: 32.6 |
| Dusk index:16.73 |
| Overall dimensions:19x5.8x17.5cm
packing box:20.5x8.5x21.2cm |
| Net weight: 700g
Gross weight:950g |
| Composition:packing box,Chinese manual,certificate,wiping cloth,eyepiece & object lens cover, desiccant,soft packing. |
Specifications︰ 7-21X40
Advantages︰ When using zoomable telescopes, you can switch to high magnification mode easily without loosing track of the target.