This is a pen-shaped UV curing light. Please prepare three AAA batteries. The batteries will be removed before shipping. Due to its pen shape, it may be difficult to cure all nails. It is recommended for those who want to start inexpensively and easily, those who want to cure partially, those who want to use it for handmade crafts, or those who want to carry it around. Please be aware that this is a used item, so there may be some minor damage. Operation has been confirmed.