Garmin Descent™ S1 Buoy

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.