A hand-held beeper equipped with a special internal magnetic ball system and safety lanyard; light and small in size, it can be easily stowed in the buoy. Operated with a firm downward movement of the hand, it is the ideal tool for calling the attention of other divers during a dive when necessary.

TECHNICAL FEATURES

• Uses a special magnetic system
• The 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