Description It is DIY fruit battery potato clock science experiment kit, it can exercise your students practical ability, train your students observation capability, thinking and analytical skills. Bright colors will appeal to students and let them learn with fun and enjoyment. It is made of metal material, which is durable and useful. Features -Color:As Shown 1 -Material:Metal -Size:17.00X3.00X0.50cm/6.68X1.18X0.20in - Made of metal material, which is durable, no easy to deformation, funny and wonderful. - DIY fruit battery kit greatly exercising students' varieties of abilities, stimulate students interest in learning and curiosity. - It is easy to assemble, greatly improve students hands-on ability, improve classroom interest. - The good and creative gift for students, students will be happy for that and love it. - Funny and scientific experiment DIY fruit battery, bringing you fantastic experience and fun.Package list: 8 x Zinc Plates 8 x Copper Plates 6 x Wires 2 x Watch Movements