This is DIY fruit battery potato clock science experiment kit, it can exercise your children practical ability, train your children observation capability, thinking and analytical skills. Bright colors will appeal to children and let them learn with fun and enjoyment. This set is made of , which is durable and useful. Features -Color:Assorted Color -Material:Metal -Size:23.00X0.20X0.20cm/9.04X0.08X0.08in (Wire) -Size:4.00X1.20X0.10cm/1.57X0.47X0.04in (Copper Sheet) -Size:2.80X2.80X0.30cm/1.10X1.10X0.12in (Electronic clock) - Made of good material, and reusable, this set of fruit battery DIY kit is not easy to damage your children due to leakage. - Complete the fruit battery science experiment project with the children to let the children experience the mysteries of science. - Cultivate children's imagination and hands-on ability, and make children more interested in science experiments. - By completing the fruit battery science experiment project with the children, enhancing mutual feelings and create good memories. - It can also improve children's hands-on ability, increase scientific knowledge, and cultivate a hobby of scientific invention. Package list: 1 × Set of Fruit Battery Science Experiment Kit