Mould King Bulldozer Building Sets, 17049 APP Programmable Construction Vehicle Kits, Engineering Model Gift Toy for Adults & Teens 14+ Collections (3935 Pieces)

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• 【Large Bulldozer Model Kit】3935-piece bulldozer building kit measuring 22.9 × 14.8 × 8.8 in. Modeled after real construction vehicles with authentic design and colors, this crawler bulldozer model is great for display and building enthusiasts.
• 【Motors & Dual Control】Powered by 3 HM motors, 1 HL motor, 2 L motors, and lithium battery. Supports 2.4GHz remote and app control with gyro and coding modes—drive forward, reverse, turn, and rotate 360° for immersive RC construction vehicle play.
• 【Functional Engineering Features】Includes adjustable bulldozer blade, movable rear ripper, working crawler tracks, and opening cab doors. A realistic remote control bulldozer for adults and teens with true engineering functions and collectible value.
• 【STEM Learning Build】Step-numbered bags and detailed color manual make assembly easier while providing a rewarding challenge. Recommended for teens 14+ and adults, this STEM building blocks set boosts focus, patience, and problem-solving skills.
• 【Durable ABS & Reliable Service】Made of strong ABS bricks with tight connections, compatible with most major brand blocks. Each set is inspected before shipping; missing parts are replaced to ensure a smooth motorized construction toy building experience.