1. Rugged, portable, economic tool. Easy, manual focus of precision optics 2. Factory-tested filters to eyes from harmful light exposure. Universal adapters allow for inspection of end- on many different connector types 3. Available in 400x magnification 4. Accessible Controls -ON/OFF switch for the light source,and a fine focus control wheel making adjustments easy and convenient 5. Universal 2.5mm and 1.25mm Adapter - Each unit comes standard with a Universal adapter that fits 2.5mm and 1.25mm ferrules Item Length: 1m Fiber Type: Single Mode Connector Type: SC/ Size: 20cm colour:Black Material:plastic Package Contents: 3 x Fiber optic microscope(Without 3 AAA alkaline batteries) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.