The Personal Design Mini USB Smart Night Light Cylinder Light - Green Light - Dry Battery Type On Sale is one of the most efficient and versatile smart night lights available today. It is so versatile that it can be used both indoor and outdoor. It has a long-lasting, bright green light that stays lit throughout the night without needing to be reattached. This is due to the convenient usb powered blue light technology it features. This ensures optimal illumination for your home or office environment, providing a soft, soothing light that does not disrupt your sleep. It is also incredibly energy efficient since it does not require any plugging in to operate. It is solely powered by a high capacity dry battery. The battery life lasts up to 50 hours, making it ideal for a variety of uses. This means that even if you have no access to an electrical socket, you can still enjoy the same level of illumination. The Personal Design Mini USB Smart Night Light also has several other smart features, such as an adjustable brightness control, a built-in timer setting and an automatic shut-off feature. This ensures that even if you forget to turn it off, it will automatically switch off after a period of time. Finally, the design is sleek and modern, making it suitable for almost any décor or environment. No matter where you place it, the cylinder light will add a touch of sophistication to any space. Now you can enjoy the perfect illumination all night long with the Personal Design Mini USB Smart Night Light.