DIY Acousto-optic Earthquake Alarm Physical Experiment Model Toy

NO.1:
Overall height: About 155mm
Product weight: about 39G
Overall width: About 75mm
Product material: multiple materials
Overall length: About 75mm
Packing method: Bagged (including installation instructions)

NO.2:
Overall height: About 190mm
Product weight: about 50.6g
Overall width: About 95mm
Product material: multiple materials
Overall length: About 120mm
Packing method: Bagged (including installation instructions)