1. Rounded edges and attention to detail 2. Multiple difficulty progression levels, step by step 3. With teaching mode, solve the problem more easily 4. Powered by three 5 batteries (batteries are not included), 30 minutes without operation automatically shut down 5. Material: ABS 6. Size: 30.2 x 21.2 x 5.5 cm 7. Weight: 0.85 kg
