Come and Check Our Promo Solutions.This mini nail flashlight is powered by 3pcs of AAA batterries(not included), with sturdy aluminum shell for durable use. The light is eco-friendly without harmful substance to the human body. 9 LEDs, low power consumption, ultra- bright. Light weight, compact and easy to carry. Can be used for setting nail polish and various kind of UV products, also can be use for money detecion. Pls check inventory and detailed info with us before placing your orders.