Best Diving Communication Devices of 2026

The Cressi Dive Slate is an essential tool for scuba divers who want to communicate underwater easily. It offers ample space for writing notes, chatting with your dive buddy, or tracking your skills during training sessions, making your dive more organized and interactive. The slate comes with a graphic pencil attached to a bright fluorescent lanyard, so you won’t lose your writing tool while underwater. Plus, the convenient clip lets you attach the slate securely to any D-ring on your B.C.D., keeping it within easy reach. Its compact size also allows for simple storage in BCD side pockets, making it practical and hassle-free to carry.

The Scuba Choice Dive Slate is a must-have diving communication device for all underwater explorers. Measuring 6" x 4", this slate provides ample space for writing and communicating underwater. With the attached clip, you can easily secure it to your gear, ensuring it's always within reach. The graphite pencil that comes with the slate allows for smooth and clear writing, even in wet conditions. Whether you need to communicate with your diving buddy, jot down important information, or make notes of your underwater discoveries, this dive slate has got you covered. Its compact size and convenient features make it an essential tool for any diving adventure.

The Mares Bluelink Pro makes managing your dive data easy and convenient. With this device, you can effortlessly transfer all your dive logs to your smartphone, eliminating the hassle of complicated connections. It uses Bluetooth Low Energy technology, which means you get a strong, reliable connection without draining your device’s battery. Plus, the Bluelink Pro works seamlessly with the Mares and MySSI apps, letting you view detailed dive profiles and track your progress over time. This makes it simple to keep all your dive information organized and accessible right on your phone.

The Saekodive Dive Slate is an essential tool for underwater communication. Its portable design allows you to easily fold it and store it in your pocket or attach it to your buoyancy control device (BCD), making it readily accessible during dives. The durable POM snap bolt ensures a secure attachment, so you won’t lose it underwater. With a built-in pencil, you can quickly jot down notes or communicate effectively while diving. Plus, its robust ABS plastic construction means it can handle the tough underwater environment, providing you with a reliable notepad for all your underwater excursions.

The XS Scuba Rattle Stick with Clip is a fantastic underwater tool in the category of diving communication devices. Made of corrosive-resistant metal, it features a clip for easy attachment to gear. The rattle stick is a signal device that helps you get your buddies' attention by shaking it.

The AmazingSpark Dive Slate is a handy tool for underwater communication. Its glow-in-the-dark design helps you see notes clearly during night dives or in low-visibility water, making your underwater experience safer and more enjoyable. The slate is compact and portable, fitting easily into your dive bag without taking up much space, so you’re always prepared to jot down important information. Made from durable ABS material, this slate is waterproof and built to last, ensuring it can handle the underwater environment. Plus, it comes with two boards, a graphite pencil, and a clip, so you can write smoothly and keep the slate attached to your gear for easy access.

Trident DiveAlertPlus V2 is a compact pneumatic signaling device that easily integrates with your power inflator without any modifications. It offers quick-connect/disconnect hose couplings for simple installation. Underwater, you can softly squeeze it for a subsurface signal, while on the surface, a firm squeeze produces a loud blast. With three models available to fit various connectors, such as Aqua Lung i3 Control System and Mares Air Control, this device ensures compatibility with different equipment, making it a versatile and user-friendly diving communication tool.

The Zim Tool Dive Signal Cards are a handy set designed to help you communicate clearly underwater using common scuba hand signals. These cards are made from tough, waterproof PVC, so they stand up to saltwater and pressure without getting damaged or faded, ensuring they last dive after dive. Their bold, easy-to-see graphics make it simple for you to quickly recognize signals even when visibility is low. Plus, their compact size means you can easily carry them in your dive gear pocket. With a durable ring clip included, you can attach them securely to your BCD or bag, keeping them close at hand whenever you dive.

The Dive Cricket Signaling Device is designed to help you communicate clearly underwater. This device allows you to send signals or messages while diving, making it easier to stay connected with your dive buddies. Whether you need to alert someone or coordinate your movements, this signaling tool enhances your underwater experience by offering reliable communication. Its simple design focuses on effective signaling, so you can feel safer and more confident during your dives. With the Dive Cricket Signaling Device, you gain an essential tool for underwater communication that improves convenience and safety.

The kinnoscuba Lobster Tickle Stick is made from solid aluminum alloy, making it strong and resistant to rust and corrosion, so it will last through many underwater adventures. It features a scale on the stick, which allows you to easily take simple measurements while diving. This is helpful if you want to check sizes or distances underwater. You can also use the stick to point out interesting sea creatures to your diving buddy, enhancing your shared experience. Plus, the adjustable silicone wrist strap keeps the stick secure and prevents it from getting lost during your dive.