Do you want educational experiment DIY fruit battery potato clock for your students? This item will prepare for you, simple and convenient to use, can improve students' hands-on ability, and stimulate students' interest in learning, perfect for home, school use. It can exercise students practical ability. Features -Color:Assorted Color -Material:Metal -Size:17.00X3.00X0.50cm/6.68X1.18X0.20in - Made of metal material, which is , 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 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 Plates 6 x Wires 2 x Electronic Watch Movement