Garmin · Diving
The Garmin Descent™ S1 Buoy is a diver communication buoy built to link a dive group with the surface using the Garmin dive ecosystem. It’s designed for crews who want better visibility into what’s happening below while divers focus on the dive.
With SubWave™ sonar networking, the buoy can support up to eight divers using compatible dive computers paired with a Descent™ T2 transceiver, while the surface team monitors key status such as tank pressures and depths. It also enables exchanging preset messages through the Garmin Dive™ smartphone app and helps networked divers navigate back by showing distance and direction to the buoy. For long days on the water, the internal rechargeable lithium-ion battery provides up to 15 hours of battery life.
Descent™ S1 lets topside crew track divers in the SubWave™ sonar network when they’re equipped with compatible dive computers paired with Descent™ T2 transceivers. It can keep tabs on details such as tank pressures and diver depths, with automatic alerts to help notify the surface team if tanks or depth ranges fall outside set expectations.
Using the Garmin Dive™ smartphone app, surface crew can exchange preset messages with networked Descent™ dive computers below to share important updates during the dive. The buoy also extends the range of diver-to-diver messaging, supporting clearer coordination within the SubWave™ sonar network.
Networked divers can view their distance and direction to the Descent™ S1 Buoy for an at-a-glance return-to-base reference. From the surface, viewers can track the approximate range to each diver in the SubWave™ sonar network, up to 100 meters away from the buoy.
Durability
Descent™ S1 Buoy is built around SubWave™ sonar communication and can support up to eight divers in a network. For surface teams, it provides a practical way to monitor important dive metrics from divers equipped with compatible dive computers paired with Descent™ T2 transceivers. Keep in mind that conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range.
Connectivity
On the surface, the buoy wirelessly connects to the Garmin Dive™ smart-device app using Wi‑Fi® technology within a range of up to 60 meters. This link enables preset message exchange with networked divers and supports post-dive review, where divers can look back at their underwater heatmaps in the app to see approximately where they were exploring after surfacing.
Battery
Designed for demanding use on the water, Descent™ S1 features a sturdy, compact 2-lb buoy design that’s impact-resistant and water-rated IPX8 to 10 meters. It uses an internal rechargeable lithium-ion battery for up to 15 hours of battery life and charges with a Garmin proprietary clip charger cable with USB-C connector. For surface positioning support, it includes GPS and GLONASS.
| Part Number | 010-02546-00 |
|---|---|
| Model | Descent™ S1 Buoy |
| Physical dimensions (WxH) | 8.0” x 5.3” (203 x 135 mm) |
| Weight | 2.2 lbs (981 g) |
| Battery type | Internal rechargeable lithium-ion |
| Battery life | Up to 15 hours |
| Charging method | Garmin proprietary clip charger cable with USB-C connector |
| Connectivity | BLUETOOTH®, Wi-Fi®, ANT®, Subwave™ |
| Sensors | GPS, GLONASS |
| Water rating | IPX8 to 10 m |
| Surface transmission range for Wi‑Fi technology | Up to 60 m (197 ft) |
| Underwater transmission range for SubWave sonar technology | Up to 100 m (328 ft) line of sight |
| Descent™ S1 buoy |
| Carrying case |
| Charging/data clip |
| Tether |
| Documentation |
Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range; for more details, visit Garmin.com/subwave
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.
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