Garmin advances dive safety technology with revolutionary Descent S1 Smart Buoy

Track, monitor and communicate with those above – and below – the surface for greater situational awareness while exploring the depths

Singapore, 16 July 2025 – Garmin Singapore today announced the Descent S1 Buoy, a revolutionary addition to the Garmin dive lineup that helps strengthen diver communication and enhances peace of mind for divers and crew.

Using Garmin’s unique SubWave sonar networking, the buoy integrates seamlessly with Garmin dive computers to help crew members on the surface track and monitor up to eight divers—and exchange preset messages with those using a compatible dive computer and Descent T2 transceiver. For increased situational awareness, connected divers can also see the distance and direction to the buoy and receive clear guidance to help them know where to surface¹.

“Garmin is focused on creating essential products designed to help keep divers safe. The groundbreaking Descent S1 buoy adds game-changing communication, navigation and safety capabilities between divers and their surface crew, making it the next must-have piece of kit for dive teams, charter operations, instructors and more.” – Mr. Scoppen Lin, Assistant General Manager, Garmin Asia

Descent S1 Buoy

Advancing the diver experience

• Find my buoy: Connected divers can see the distance and direction back to the buoy – whether it’s tethered in place, on the anchor line of a boat or on the boat’s tag line during a drift dive – and use it to navigate back to the buoy².
• Diver-to-surface messaging: When using a connected Descent dive computer, divers can tell those on the surface where they are, where they’re going, if they need to come up early and their remaining decompression time¹.
• Extended diver-to-diver messaging: While beneath the surface, the buoy extends the range of diver-to-diver messaging capabilities. Divers with compatible Descent dive computers can exchange preset messages with one another up to 100 meters away¹.
• Post-dive review: After returning to the surface, view underwater heatmaps on the Garmin Dive smart-device app to see where explorations took place.

Revolutionizing the diving experience from the surface

Topside crews can better track divers below the surface when using both the Descent S1 Buoy and Garmin Dive app.

• Remote diver monitoring: Track tank pressures, diver location and depth, and more when divers are equipped with a compatible dive computer and Descent T2 transceiver. Automatic alerts can also let topside crew members know when a diver’s tank pressure is low².
• Surface-to-diver messaging: Topside crews can exchange preset messages with connected Descent dive computers underwater, allowing them to communicate with divers and send out a diver recall if the dive needs to be cut short.
• Diver location tracking: Track the approximate range to each diver in the SubWave sonar network—up to 100 meters away from the buoy².

Rugged and connected

The compact Descent S1 Buoy weighs just 981g and has an IPX8 water rating to 10 meters. The rechargeable lithium battery provides up to 15 hours of battery life so it can be used during a typical weekend dive trip before needing to be recharged. To keep divers connected to their topside crew, the buoy uses Wi-Fi^® technology to wirelessly connect to the Garmin Dive app, up to 60 meters away.

Available now, the Descent S1 Buoy has a suggested retail price of SGD 3,419 and will be available at all Garmin Brand Stores, Lazada, Shopee, Garmin Online Store, Takashimaya and selected authorized retailers. To learn more about the Descent S1 Buoy, visit garmin.com.sg/products/intosports/descent-s1

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¹ Some compatible dive computers can receive, but not send, messages. Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range; for more details, visit Garmin.com/subwave.
² Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range; for more details, visit Garmin.com/subwave.