1. Material: 4 inch round convex mirror is made of glass, black frame, safe and to use, ensure long term use.2. 360 Degree Viewing: With a 360 degree up and down adjustment to any viewing Angle., the convex security mirror offers complete visibility in all directions.3. Versatile Installation Options: The mirror universal base design allows for flexible placement in cabinets, compartments, computers, or attachment to other items.4. Usage: For safety, you can see yourself or your surroundings, such as a computer mirror, a cubicle mirror, or a rear view display on a desk. It can also be used in physics experiments.5. Easy to Use: Equipped with the appropriate facilities, adjust the mirror to the required Angle, you can experiment, such as observing the focus, only need to be equipped with the appropriate light source or light.Specification:Item Type: Convex Security MirrorMaterial: Glass, ABSConvex Mirror: Φ100mm / Φ3.94in F'=65mm / F'=2.56inpacking list:1 xConvex Security Mirror 1 x BaseNote:Maintenance1. Keep it clean and store it in a cool, dry place without corrosive gases.2. If the mirror is dusty, you can use a blow ball to blow it off, or gently brush it off with a clean soft brush. If it is dirty, wipe it gently with a degreased cotton pad and a little alcohol.