Mini lamp sibel nails of 21 leds power 3 watts this mini lamp uv leds is ideal for work in dimical and very practical for its ease of use you have the location to put 4 fingers at a time this mini lamp comes with a transformer but you can also use it with 4 x 15 v batteries characteristics: 21 leds power 3 watts supplied with transformer delivered without batteries on / off button warranty 1 year.