Become a super detective with this cool spy kit. Conduct interesting experiments on sound. Discover how sound travels and learn some amazing facts about spy phones and sound. It can also be used as a hydrophone to detect sounds under water and as a geophone for detecting sounds in the ground.
- Sound collection tube is 30 cm long.
- Connecting cable is over 150 cm long.
- 1 lightweight earphone.
- Needed but NOT INCLUDED: Small cross-head screwdriver, 4 (1.5V) AAA batteries
- Shipping Weight: 1.2 pounds
- Manufacturer recommended age: 10 years and up
- Batteries: 4 AAA batteries required.
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