Overview The IST Underwater Shaker is a compact acoustic signaling device designed to help divers attract a buddy&';s attention underwater. A simple shaking motion creates an audible signal, while the built-in magnetic silencer helps keep the shaker quiet when it is not needed. The streamlined black design includes an attachment clip and IST-branded lanyard for convenient placement on compatible BCDs, D-rings, or other dive gear. The magnetic silencing feature makes the TA-8 particularly useful for divers who want an attention-getting device without continuous unwanted rattling throughout the dive. Best For Scuba diving Getting a dive buddy&';s attention underwater Dive guides and instructors Low-visibility diving Divers who prefer a silenced shaker when not in use Key Features Underwater Signaling: Creates an audible underwater sound when shaken to help attract another diver&';s attention. Magnetic Silencer: Helps prevent unwanted rattling when the signaling device is not being used. Simple Operation: Requires only a shaking motion to produce an attention-getting signal. Integrated Attachment Clip: Provides a convenient way to secure the shaker to compatible dive equipment. IST Lanyard: Attached lanyard provides an additional handling and retention point. Compact Design: Easy to carry as part of a recreational or professional dive setup without adding unnecessary bulk. Specifications Product Type: Underwater Shaker / Acoustic Signaling Device Silencer: Magnetic Color: Black Attachment: Clip & Lanyard Use & Attachment Attach the shaker to a secure and easily accessible point on your BCD or other compatible dive equipment. When attention is needed underwater, release the magnetic silencer and shake the device to create an audible signal. Secure the shaker again after use to minimize unnecessary noise. What&';s Included One IST Underwater Shaker Magnetic silencing system Attachment clip IST-branded lanyard FAQs What is an underwater shaker used for?It is an acoustic signaling device used to attract another diver&';s attention underwater when hand signals may not be noticed. What does the magnetic silencer do?The magnetic silencer helps keep the internal signaling mechanism quiet when you are not intentionally using the shaker. Does it require batteries?No. The signaling sound is produced mechanically by shaking the device. How does it attach to dive gear? Yes, It includes an attachment clip and lanyard for securing it to a convenient point on compatible dive equipment. Care & Maintenance Rinse the shaker, clip, and lanyard thoroughly with fresh water after diving, especially after saltwater use. Allow it to dry completely before storage and periodically inspect the attachment hardware, lanyard, and silencing mechanism for wear or damage. Expert Insight An underwater shaker is useful when you need something more noticeable than a hand signal, especially in low visibility or when a buddy is looking in another direction. It adds a magnetic silencer so you can carry an audible signaling device without having it constantly make noise throughout the dive.