Portable - The LED night light is battery powered. It is equipped with a rechargeable 1800 mAh battery allowing up to 20 hours of use. You can connect the lamp to the wall outlet all the time like an ordinary bedside night light. You can disconnect it if needed and carry the portable light overnight for added safety. Or bring it to outdoor camping as a spare lamp. Dimmable - The bedside lamp is integrated with a touch sensor dimmer switch with 3 brightness levels that allow you to easily change the brightness by pressing the lamp. The lowest setting generates soft light for better sleep. Its highest setting provides extra brightness for comfortable reading or daycare purposes without disturbing sleeping partners or babies. Universal USB charging. Even if you lost or forgot to bring its adapter, you can still charge the lamp by connecting the cable to any USB port, including laptops, computers, power banks, wall outlets or power strips. A nice addition to the home - This novelty lamp has a sleek, low-profile design that adds mood light to spruce up your home or office without taking up too much space. With its built-in battery, you can place the light anywhere, your bedside table, bookshelves, desk, side table, dining table and more.