






Garmin Descent™ S1 Buoy
Computers & Gauges - Garmin
Garmin Descent™ S1 Buoy – Sonar Communication for Serious Divers
Stay connected below the surface like never before.
The Garmin Descent™ S1 Buoy is a revolutionary sonar communication device that brings seamless diver-to-surface and diver-to-diver communication into the Garmin dive ecosystem. Whether you're a dive leader, safety officer, or enthusiast exploring with a buddy, this buoy enhances underwater awareness, safety, and tracking — all in real time.
Key Features:
-
📡 SubWave™ Sonar Network: Supports up to 8 divers with connected Descent™ dive computers and T2 transceivers.
-
💬 Two-Way Messaging: Exchange preset messages between surface crew and divers via the Garmin Dive™ app¹.
-
📍 Diver Tracking: Monitor tank pressures, depths, and distance from the buoy in real time².
-
🧭 Return-to-Base Guidance: Divers can view their distance and direction to the buoy underwater².
-
🔥 Heatmap Review: After surfacing, review underwater heatmaps on the Garmin Dive™ app to see where you've explored.
-
🔋 Long Battery Life: Enjoy up to 15 hours of dive time on a single charge.
Why You'll Love It:
Remote Diver Monitoring
Topside crew can monitor each diver’s tank pressure, depth, and distance with automatic alerts for safety thresholds — perfect for dive professionals and group leaders².
Two-Way Communication
Maintain contact underwater by exchanging preset messages through the Garmin Dive™ app — an invaluable tool for managing dive groups or responding to potential issues¹.
Enhanced Navigation
Divers always know the way back. The S1 buoy acts as a live surface reference, showing each diver their direction and distance to the buoy, up to 100m range².
Built to Withstand Adventure
This compact, rugged buoy is impact-resistant and water-rated to 10m (IPX8), designed for real-world diving conditions.
Wireless & Secure
With Wi-Fi® connectivity (up to 60m range), the S1 buoy syncs with the Garmin Dive™ app, ensuring seamless operation from the boat to beneath the waves.
Surface Positioning
Multi-GNSS support (GPS & GLONASS) ensures reliable signal reception at the surface, even in challenging environments.
Specifications:
-
Weight: Approx. 2 lbs
-
Battery Life: Up to 15 hours
-
Water Rating: IPX8 (up to 10m)
-
Connectivity: Wi-Fi® (up to 60m), SubWave™ sonar
-
Satellite Support: GPS, GLONASS
Take Your Dive Communication to the Next Level
Whether guiding a group, monitoring safety, or staying connected on solo explorations, the Garmin Descent™ S1 Buoy gives you the tools to dive smarter and safer.
What’s in the Box:
-
Descent™ S1 Buoy
-
Carrying Case
-
Charging/Data Cable
-
Tether
-
Documentation
¹ Compatible with Garmin Descent™ dive computers and T2 transceivers. Garmin Dive™ app required.
² SubWave™ network capabilities require compatible devices and pairing.
Your Local Dive Store
PRODUCT INFORMATION
- Description
- Size Charts
- Shipping
- Returns
- Reviews
Garmin Descent™ S1 Buoy – Sonar Communication for Serious Divers
Stay connected below the surface like never before.
The Garmin Descent™ S1 Buoy is a revolutionary sonar communication device that brings seamless diver-to-surface and diver-to-diver communication into the Garmin dive ecosystem. Whether you're a dive leader, safety officer, or enthusiast exploring with a buddy, this buoy enhances underwater awareness, safety, and tracking — all in real time.
Key Features:
-
📡 SubWave™ Sonar Network: Supports up to 8 divers with connected Descent™ dive computers and T2 transceivers.
-
💬 Two-Way Messaging: Exchange preset messages between surface crew and divers via the Garmin Dive™ app¹.
-
📍 Diver Tracking: Monitor tank pressures, depths, and distance from the buoy in real time².
-
🧭 Return-to-Base Guidance: Divers can view their distance and direction to the buoy underwater².
-
🔥 Heatmap Review: After surfacing, review underwater heatmaps on the Garmin Dive™ app to see where you've explored.
-
🔋 Long Battery Life: Enjoy up to 15 hours of dive time on a single charge.
Why You'll Love It:
Remote Diver Monitoring
Topside crew can monitor each diver’s tank pressure, depth, and distance with automatic alerts for safety thresholds — perfect for dive professionals and group leaders².
Two-Way Communication
Maintain contact underwater by exchanging preset messages through the Garmin Dive™ app — an invaluable tool for managing dive groups or responding to potential issues¹.
Enhanced Navigation
Divers always know the way back. The S1 buoy acts as a live surface reference, showing each diver their direction and distance to the buoy, up to 100m range².
Built to Withstand Adventure
This compact, rugged buoy is impact-resistant and water-rated to 10m (IPX8), designed for real-world diving conditions.
Wireless & Secure
With Wi-Fi® connectivity (up to 60m range), the S1 buoy syncs with the Garmin Dive™ app, ensuring seamless operation from the boat to beneath the waves.
Surface Positioning
Multi-GNSS support (GPS & GLONASS) ensures reliable signal reception at the surface, even in challenging environments.
Specifications:
-
Weight: Approx. 2 lbs
-
Battery Life: Up to 15 hours
-
Water Rating: IPX8 (up to 10m)
-
Connectivity: Wi-Fi® (up to 60m), SubWave™ sonar
-
Satellite Support: GPS, GLONASS
Take Your Dive Communication to the Next Level
Whether guiding a group, monitoring safety, or staying connected on solo explorations, the Garmin Descent™ S1 Buoy gives you the tools to dive smarter and safer.
What’s in the Box:
-
Descent™ S1 Buoy
-
Carrying Case
-
Charging/Data Cable
-
Tether
-
Documentation
¹ Compatible with Garmin Descent™ dive computers and T2 transceivers. Garmin Dive™ app required.
² SubWave™ network capabilities require compatible devices and pairing.
Custom tab content goes here.
Custom tab content goes here.