About This

• 【DIY Earthquake Alarm】: Build your own working earthquake alarm model. Teaches basic mechanical structures and power transmission through hands-on assembly.
• 【Safe Premium Material】: Made from smooth, burr-free wood. Durable and safe for kids. Measures 14cm x 8cm (5.51 x 3.15 inch).
• 【Great School Project】: Perfect for science fairs, classroom activities, or parent-child bonding. Simple and practical learning fun.
• 【Easy Assembly】: Direct assembly required, no extra accessories needed. Simple to put together, exercises fine motor skills and problem-solving.
• 【What You Get】: 1 Set Hand Generator Assembly Set. Note: Not infant toy; keep away from small children to avoid ingestion.