This mini USB smart night light with its personal design and low price of 20$ is ideal for those looking to save money while bringing life to their rooms. It features a oblique mouth design and green light that emits from inside it to create a warm, inviting atmosphere. This night light is powered by dry batteries, which means you save on electricity bills and don't have to worry about running wires for your night light. It's also easy to operate with its single-touch control button. You can easily switch between normal light, soft light and SOS light for different needs. This USB smart night light has a compact size that won't take up too much space on your shelf or desk,while the built-in temperature protection system ensures its safe use. What's more, it can be used as a teaching aid for astronomy, as well as a decorative piece in playrooms and children's nurseries. Overall, this cheap personal design mini USB smart night light is both economically sensible and aesthetically appealing to bring light to any room.