Features:<br />-UV light is not easy to break and eco-friendly with no harmful substance to the human body.<br />-Short hardening time. An ordinary flashlight lamp beads arrived 9 lamp beads.<br />-9 LEDs、 low power consumption、 ultra-bright、 visible over a long distance.<br />-Can be used for setting nail polish and various kind of UV products、 such as UV Top Coat / UV Builder Gel / etc.<br />-Can be used for both hands and feet.<br />-Light weight、 compact and easy to carry.<br />-With the black strap、 you can take with it anywhere easily<br />Specifications:<br />-Light bulb: 9 LED<br />-Operating voltage: 4.5V<br />-Battery: 3x 1.5v AAA (not included)<br />-Diameter: 0.94\