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Mares Magnetic Shaker Scuba Diving Communication Device

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Starting bid:
US $20.00
0 bids
Price:
$30.00
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Condition:
New
A magnet is located inside on either end of the shaker with a ball bearing in between. Shaking the device moves the ball bearing, creating a loud Echo sound underwater. It's a great communication system when in a world where words simply won't be heard.