This is a smart nail dryer with a built-in lithium battery. It features two attractive highlights: the compact round-in-square shape, and the micro-groove on top where manicure tools can be placed. Twenty-eight evenly-distributed dual light source LED beads on the inner top can dry most nail gels quickly. The dryer is equipped with an automatic sensor light, four timing modes and an automatic memory setting which can memorize users’ last choice. The nixie tube on the top makes the drying time visible and the magnetic detachable base plate makes it more sanitary to use.