<br><br><b>TOOYROOM 3D Wooden Puzzle Mechanical Gear Marble Track Run Set Solar Energy DIY Kit</b> <br>Education to build toys: Improve attention, creativity, explore curiosity and imagination, and develop logical thinking, movement and problem-solving skills. <br><br><b>Product Description: </b> <br>Material: Basswood board <br>Assembled Size: 15*12*17cm/5.9*4.7*6.7*6.7 in <br>Package Size: 26*18*5.2 cm/10.2*7.09*2.05in Weight:400G/0.88LB <br>Assembled Time:1-2H <br>For adults or people over 14 years old <br><br><b>Unique Design: </b> <br>Indoor and outdoor dual-use <br>1. Place it indoor: Connect the wire of motor with the battery case, 2 pcs of AA battery requested. (not included ) <br>2. Place it outside on a sunny day: Connect the wire of motor with solar panel, the solar panel can turn the sun's light into electrical power for its motor. <br><br><b>3D Wooden Marble Run Puzzle Set </b> <br> Operated vis solar power or battery, <br> Crank the marbles up, balls will go through dips and turns. <br><br><b>Package Including:</b> <br>English Instrction <br>wooden pieces <br>3 Marbels <br>Sandpaper <br>Glue <br>Solar panpel <br>Battery case<br><br><b>Warm Tips:</b> 1. The 3D wooden model kit is designed for adults up 14 years old. This building kit contains small parts that are not suitable for kids under the age of 3. 2. Keep away from fire and heat sources, away from babies and young children.