Item Type: Solar Power Space Car Material: Plastic, Electronic Components Battery: 2 x AA battery (not included) Power Supply Mode: Solar power supply or AA battery power supply (not included) Suitable: Above 6 years old Package List 4 x Plastic Assembly Blocks 1 x Body Box 1 x Main Body Box Cover 1 x Solar Panel 1 x Left Gear Box 1 x Right Gear Box 1 x Gear Assembly 4 x Gear Parts 1 x Sticker 1 x Screwdriver 1 x Manual 1DIY Assembly: Through diy practice, helps children to improve hands on skills, ability to think independently and develop brain and creativity. 2Educational Function: Helps kids to learn mechanical transmission structure and systematically and comprehensively learn principles of energy conversion. 3Two Modes of Energy Output: One is battery powered, which makes convenience to play indoors. The other is solar powered, just need to operate under sunlight. 4Four Tire Drive: With six rubber tires, and just 4 wheels can drive car with gears, can do deceleration motion and speed up movement to improve kid interest in engineering. 5Perfect Gift: Solar power space car allows children to learn something about science, a wonderful gift for children to know construction of car model.