It is 6 1/4" long. The string is not as long as in the picture, you cannot loop it through, but it can be replaced.

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Mares Magnetic Shaker Scuba Diving Communication Device

Q: Is the magnet in this strong enough to damage dive computers, cameras or other electronics? Thank you, Ashley

Hi Ashley,Thanks for your question. No, the magnet is strong enough to damage electronics. If you have any other questions, please let us know.ThanksDivemaster Chris866-728-2293

Q: What material is the cylinder made of? Could it also be used to "bang a tank" if the rattle function fails?

This shaker is made from anodized aluminum. It can be used to bang your tank in an emergency but you might scratch or dent your rattler.

Product ID: 291086146

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🌊Loud underwater sound

🧲Dual internal magnets

⚙️Ball bearing echo mechanism

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Description

🧲 Make waves, not noise – communicate underwater like a pro!

SAFETY FIRST - Instantly grab your dive buddy’s attention in critical moments.
MAGNETIC PRECISION - Dual magnets create a powerful, reliable underwater alert system.
NO BATTERIES NEEDED - 100% mechanical operation means zero downtime or maintenance.
COMPACT LIGHTWEIGHT - Sleek 100g design clips easily to your BCD without bulk.
ECHO SOUND TECHNOLOGY - Ball bearing inside generates a loud, unmistakable echo sound underwater.

The Mares Magnetic Shaker is a compact, battery-free scuba diving communication device featuring dual internal magnets and a ball bearing that produces a loud echo sound underwater. Designed to clip onto your BCD, it ensures quick, reliable signaling to your dive buddy, enhancing underwater safety and communication.

Specifications

Color	Black
Size	M
Weight	1 Pounds
Material Type	Polyester
Number of Items	1
Included Components	Mares Magnetic Shaker Scuba Diving Communication Device
Batteries Included?	No
Brand	Mares
Manufacturer	Mares
Item model number	415172
Product Dimensions	17.78 x 2.54 x 2.54 cm; 100 g
ASIN	B002ZDP7PI

Have a Question? See What Others Asked

Is the magnet in this strong enough to damage dive computers, cameras or other electronics? Thank you, Ashley

How long is it?

What material is the cylinder made of? Could it also be used to "bang a tank" if the rattle function fails?

Did divemaster chris mean to say that the magnet is not strong enough to damage electronics or throw your compass off?

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