A night light bulb is a small, low-wattage light source designed to provide gentle illumination during the night. These bulbs are often used in bedrooms, hallways, and bathrooms to help guide people safely in the dark without being too bright or disruptive to sleep. They come in various styles, including plug-in and battery-operated options. Many night light bulbs use LED technology, which is energy-efficient and has a long lifespan. Some models feature adjustable brightness levels or color options, allowing users to customize the light to their preferences. Night lights can also help reduce anxiety for children and provide comfort during nighttime hours.