Explore: 7 different experiments are included to get started! Experiment again & again: utilize various household oils to see how their reactions differ test hypotheses and make observations! Manufacturered by Discovery. Led light: never worry about overheating with the LED light. Batteries not included. Download user guide below Scientific principles: explore and demonstrate the basic scientific principles of density polarity and effervescence in a fun hands-on way. Age range: 12 years & up