The Hanukkah Menorah features big 10mm LEDs to simulate candles. Two small, low profile switches help "turn on" the right amount of LEDs or reset the unit. The assembled board is 6 in. long and 3 in. tall. Each kit includes: pc board, switches, LEDs, and mounting base. Can be powered by 9V battery (220019) or a 9V power adapter. Kit requires assembly and soldering. 110 V AC. USA plug.