If you are not satisfied meet in any regards, please have no hesitation to contact us ,We will try our best to resove it. Long working distance Sharp images over a super wide field view Large Metal stand and ework 0.63X-3.5X zoom objective ( about 62 - 400X on the display( CCD/COMS Size: 1/3 ", display Size: 20 ") ) Coaxial C-mount Lens Specification: Zoom microscope objective: 0.63X-3.5X Mount: C-mount Compatible with PC or TV camera connection (camera sold separately) Working distance: 30mm-35mm Field of view: 1mm-6.5mm Illumination: coaxial light Light Power input: 110 - 240V, 50 - 60HZ, auto switching Pillar: 260mm long Package Content: 1 x Coaxial C-mount Lens 1 x Coaxial Light 1 x Light power supply 1 x 50mm Ring Adapter 1 x Stereo Table Stand