Introducing the revolutionary Shabulb. The Shabulb looks and acts like a traditional light bulb – except for the unique patent pending lever. Slide the lever (on the side), and tiny covers glide over the hidden LED lights that sit within the bulb. Reveal and conceal light as needed without affecting electrical currents. Sunlite’s newest product won’t just light up your room; it’ll enhance your Shabbat experience. This bulb is etc. approved for electrical safely without compromised. Enjoy Shabbos with family and friends worry free. Designed to be used only in open fixtures in dry location. the only Kosher certified lightbulb of its kind that allows one to hide or reveal light with a simple push of a lever in a halachically permissible manner on Shabbat and yom TOV! although LED light isn't considered “fire” in the halachik sense, the bulb itself is considered Muktesh. The Shabulb solves this issue by using a unique removable cover that permits the use of the lever on Shabbat and yom TOV. It’s important to note that the lamp itself may not be moved or turned on and off during Shabbat and yom TOV.