Portable size: nail dryer is really lightweight and easy to carry; foldable design makes it saves space and convenient to store, can be easily put into your purse or handbag. safe and effective: compared with other nail dryers, its light simulates sunlight, no harm to eyes and skin, and the safe power can cure glue quickly. usb design: power by usb cable, allows you to use it in manicure shop, schools, offices, homes, and travel, the usb can be connected to laptops, power banks. suitable for curing most kinds of nail-polish, with a one-button design and has a built-in timer, easy to operate even for nail art beginners painless and simple: mouse shape uv led nail lamp can dry your nail-polish and provide painless protection for your hands.