Product: Mares Magnetic Shaker Scuba Diving Communication Device
Brand: Mares
Color: Black
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

Search query: mares prestige octopus
Relevance: Irrelevant