Office Air Purifier Home Smart Touch Negative Ion Removal Of Formaldehyde And Soot Purifier
Optical system: refraction system
Focal length: 300mm
Focus ratio: 4.29
Eyepiece: 20mm, 6mm
Extender: 3X/1.5X
Finder: 5x24
Field of view: 1.2��
Tripod: Aluminum alloy tripod