Discover a deeper connection with the Descent S1 diver communication buoy. Using SubWave™ sonar networking, this revolutionary buoy works with the Garmin dive ecosystem, enabling topside crew members to monitor and track their dive groups — as well as exchange preset messages with divers wearing a compatible dive computer paired with a Descent™ T2 transceiver. Networked divers can also see their distance and direction to the buoy for return-to-base reference1.
REMOTE DIVER MONITORING
Surface crew can monitor divers equipped with compatible dive computers paired with Descent™ T2 transceivers to keep track of tank pressures, depths, distances and directions for up to 8 divers on the Subwave™ sonar network. Automatic alerts can let topside crew know if there’s an issue with tanks or depth ranges below2.
TWO-WAY MESSAGING
Via the Garmin Dive™ app, preset messages can be sent and received by topside crew connected to divers wearing Descent T2 transceivers paired to compatible dive computers below, alerting divers if there’s a situation they need to know about. In addition, the Descent S1 buoy extends the range of diver-to-diver messaging while in the water1.
DIVER LOCATION TRACKING
Viewers at the surface can track the approximate range to each diver in the SubWave sonar network, up to 100 meters away from the Descent S1 buoy2.
FIND MY BUOY
Divers in the network can see their distances and directions back to the Descent S1 buoy, giving them clear return-to-base reference and increased situational awareness while diving2.
POST-DIVE REVIEW
After surfacing, networked divers can sync and review their underwater heatmaps on the Garmin Dive smartphone app to see approximately where they were exploring.
RUGGED DESIGN
The sturdy, compact 2-lb buoy is impact-resistant and water-rated IPX8 to 10 meters.
LONG BATTERY LIFE
The rechargeable lithium battery gives up to 15 hours of battery life, letting you dive longer between recharges.
SECURE CONNECTIVITY
Wi-Fi® technology wirelessly connects the buoy to the Garmin Dive smart-device app within a range of up to 60 meters.
MULTI-GNSS SUPPORT
On the surface, multiple satellite systems (GPS and GLONASS) aid signal reception in challenging environments.
SUBWAVE™ TECHNOLOGY DIAGRAM – NETWORK UP TO 8 DIVERS

Requires each diver’s Descent T2 transceiver to be paired with the Descent S1 diver communication buoy and their compatible air-integrated dive computer. Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range; for more details, visit Garmin.com/subwave.
1Some 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
2Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range; for more details, visit Garmin.com/subwave













