What materials are used in flashlight parts?

Flashlights are typically made from a combination of materials, including aluminum or plastic for the body, which provides durability and lightweight properties. The lens is usually made of glass or polycarbonate, offering clarity and resistance to impact. Internal components, such as the circuit board and battery contacts, are often made from copper or brass for good conductivity. Additionally, rubber or silicone may be used for seals and grips to ensure water resistance and comfort during use.