Mares Magnetic Shaker Scuba Diving Communication Device Scooter Parts By combining three different materials

By combining three different materials to simulate bone

The card comes with 3 holes punched for your log book or for using a lanyard when underwater

Stainless Steel

the X1 Compass is hard to beat

With a depth rating to 330 feet

Mares Magnetic Shaker Scuba Diving Communication Device Scooter Parts By combining three different materialsFeatures: Uses a special magnetic system 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 Great for underwater communication A useful underwater safety device Details: Clip this device onto your bcd so it's handy when you need to get your diving buddy's attention. A magnet is located inside on either end of the shaker with a ball bearing