2 Sets Fruit Battery Science Experiment Kit Orange Potato Lemon Battery Physics Teaching Experiment with 2 Pieces Electronic Clock Educational Toy for Students

2 Sets fruit battery science experiment kit orange potato lemon battery physics teaching experiment with 2 pieces electronic clock educational toy for students Features: Happy and easy to learn: A wide variety of experimental raw materials can be found at home, oranges, tomatoes, potatoes, apples, etc. suitable for both home and school. Functional game: Learn about electricity in an innovative way, also develop children's hands ability, observation, space cognition, stimulate children's intellectual potential. Specifications: Material: zinc, copper, plastic Size: approx.15 x 10 cm/ 5.9 x 3.9 inches in length/width Color: as pictures show Quantity: 34 pieces totally Package includes: 8 x Wire 4 x Crocodile clip 8 x Copper sheet 8 x Zinc sheet 4 x LED 2 x Digital clock Note: Children's playing must under parental or teacher's supervision. Suitable for people over 12 years old. (US) Suitable for people over 14 years old. (Europe)