Kellner eyepieces are simple designs intended for use on telescopes with apertures not larger than f/8.0.
| Focal Length | 9.0mm |
| Eye Relief | Not Specified by Manufacturer |
| Apparent Field of View | Not specified by manufacturer |
| Dimensions | 1.4 x 2.0" (35 x 52mm) WxH |
| Weight | 0.16 lb (75 g) |