4M 5557 Crystal Growing Science Experimental Kit - 7 Crystal Science Experiments with Display Cases - Easy DIY STEM Toy Lab Experiment Specimens, Educational Gift for Kids, Teens, Boys & Girls Single Board Computers 2 AAA batteries included for

2 AAA batteries included for demo

strung on clear stretchable and durable string

【Easy to Carry】 It’s about the size of an frozen waffle，Palm-size

75″ H × 9″ W × 9″ L and weighs 2

Easy to Clean - Simply run them in water and lay them to dry

4M 5557 Crystal Growing Science Experimental Kit - 7 Crystal Science Experiments with Display Cases - Easy DIY STEM Toy Lab Experiment Specimens, Educational Gift for Kids, Teens, Boys & Girls Single Board Computers 2 AAA batteries included forStyle: Growing Science Kit Encourage your child's curiosity with the award winning 4M crystal growing science kits. These globally renowned science kits are wonderful STEM gifts that engage kids with fun, accessible hands on experiments. Introduce chemistry and geology principles while providing beautiful, real crystals that kids can keep and display. Simply follow the directions to conduct seven crystal growing experiments. Watch as each unique