Fangrui Product Details 1. Wooden Electric Simulation Crawler Tank Diy Toy Assembly Model,spec: No. 2 Dual Motor Remote Control Edition 2. Train Childrens Practical Ability, Hand-eye Coordination Ability, Exercise Thinking, Develop Intelligence, And Explore Science. 3. Special Fit Design, No Glue Needed. Simply Remove The Parts From The Plywood For Smart And Fun Assembly. 4. Material: Wood 5. Suitable Age: Over 5 Years Old 6. Note: The Product Delivery Does Not Contain Batteries, Glue, Paint, Etc. 7. Function Difference: 8. Basic Version: No Remote Control, Turn On The Switch And Run Forward 9. Remote Control Version No. 1: Remote Control Tank Forward And Backward 10. Remote Control Version No. 2: Remote Control Tanks Can Move Forward, Backward And Turn 11. Remote Control Version No. 3: Remote Control Tanks Can Move Forward, Backward And Turn 12. Automatic Black Line Version No. 4: Can Patrol The Black Line, Can Only Drive Along The Black Line 13. No. 1 Single Motor Basic Version: 14. -overall Height: About 90mm 15. -overall Width: About 120mm 16. -overall Length: About 190mm 17. -product Weight: About 198g 18. No. 1 Single Motor Remote Control Version: 19. -remote Control Size: 95x40mm 20. - Product Weight: About 216g 21. No. 2 Dual Motor Remote Control Version : 22. -overall Height: About 95mm 23. -overall Width: About 140mm 24. -remote Control Size: 75x75mm 25. - Product Weight: About 358g 26. No. 3 Double Motor Remote Control Version : 27. -overall Width: About 130mm 28. -remote Control Size: 110x85mm 29. - Product Weight: About 375g 30. No. 4 Automatic Black Line Version: 31. - Product Weight: About 261g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.