NOTE: This kit requires both a power supply (sold separately) and also the LEGO® Doctor Who Set (#21304).They are mankind's worst intergalactic enemy, and they strike fear into any 2-hearted doctor. Now you can breathe new, evil life into your Daleks by adding glowing blue eye stalks that connect to a micro lighting effect controller programmed to pulse the lights as if the Daleks were uttering their evil attack cry, "EX-TER-MIN-ATE!" Kit includes two eye stalks with pre-mounted blue Pico LEDs and micro lighting effect controller. Just add power and head for the nearest safe galaxy!