Feature: 1. SIMULATION TOY: Very interesting toy that simulates a cannon, allowing children to learn knowledge and understand military 2. BEECH MATERIAL: The material is light and easy to operate, safe and healthy, the laser cutting surface is glazed and burr free, and easy to assemble 3. EXERCISE ABILITY: This electronic cannon can exercise children hands on ability and understand the principle of gas compression 4. IMPROVE PERFORMANCE: Cultivate children interest in learning and desire for knowledge, which helps to improve academic performance 5. LAY FOUNDATIONS: The scientific knowledge in small production can lay the foundations for future inventions, mathematics, physics and chemistry learning Specification: Item Type: Puzzle Cannon Model Kit Material: Beech Uses: Handmade, Puzzle Teaching Paint Material: Wood Without Paint Wooden Building Block Type: Building Blocks Power Supply: 1.5V AA Dry Battery x 4 (Delivery without battery). Package List: 1 x Wooden Board2 x Wheel1 x Axle1 x Battery Box1 x Lead Wire2 x Hose1 x Switch9 x Foam Ball1 x Air Pump1 x Accessories Package1 x Syringe1 x Screwdriver