A cracking contraption to make with the help of madcap inventor Wallace & his helper Gromit. This kit contains everything you need to make a wacky clock powered only by liquid. Easy to make with push in parts requiring no glueing & stickers to decorate it. To make the clock work simply pour liquid into the tank insert the electrodes &8211; & watch the clock screen come to life! Can also be powered using 2 x AA batteries (not included see item 7098//P7098 ). For ages 10 years & over.