This is a seriously robust little switch for your DIY electronics or vehicle projects. It's a latching (also called maintained) push button – press it once to turn ON and lock in place, press it again to turn OFF. It's built from silver stainless steel with a bright yellow LED ring that lights up when activated, so you always know the status. It's rated for 12V DC and is IP65 waterproof and dustproof, meaning it can handle splashes and wet environments, making it perfect for cars, motorcycles, boats, or outdoor control panels. It has a 1NO1NC contact configuration for wiring flexibility. The mounting hole size is 0.63 inches (16mm), and it comes with a handy wire socket plug to make connections super easy. It's rated for an impressive 200,000 electrical cycles and 1,000,000 mechanical cycles, so it's built to last through tons of use. A high-quality, professional-looking switch for a very reasonable price.