Feature: 1. Suitable for HD Multimedia Interface VGA USB industrial video microscope camera. 2. The lens is a C-type adapter, which is used to connect a camera or digital eyepiece to a microscope. 3. The blue anti‑reflective coating of the lens increases the light transmittance. 4. 0.7‑5x magnification to meet more needs and obtain a wider field of view. 5. The product is made of high quality material to give you a more professional working tool. Specification: Item Type: Microscope Lens Material: Aluminium Alloy Color: As shown in the picture Uses: Electronic detection, crystal detection, etc. Application: Suitable for HD Multimedia Interface VGA USB industrial video microscope camera 10X-200X C-Mount Lens: Working Distance: 90MM-150MM Scaling Ratio: 1:7.2 Magnification: 0.7-5x (approximately 10-200 times on the screen). Maximum Magnification Field of View: 3.2mmx1.8mm. Minimum Field of View: 37mmx21mm. Eyepiece Lens: 0.4X Product Size: Approx.55x135mm / 2.17x5.31in(D x L) Weight: Approx. 508g / 17.9oz. Package List: 1 x Microscope Lens Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. All test data are based for HAYEAR 34MP 1080P microscope camera. If you use other cameras, the data will be biased.