Discover a deeper connection with the Descent S1 diver communication buoy. When paired with up to eight Descent T2 transceivers (included in the Garmin Descent S1 + T2 bundle version) and the Garmin Dive smartphone app, the buoy enables topside crew to monitor and exchange preset messages with divers wearing compatible dive computers. (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.) Those on the surface can use the Garmin Dive app to see the diver’s tank pressure, depth and distance. Surface users can also send preset messages to divers below to alert them of situations that need attention. For positional awareness, divers can track their distance and direction back to the Descent S1 buoy. Once they’ve surfaced, divers can also sync and review heatmaps of their underwater activity in the Garmin Dive app to gain a better picture of approximately where they were diving. Plus, with a battery life of up to 15 hours, the Descent S1 diver communication buoy can be deployed for a full day of diving before needing a recharge.

• For increased awareness, the buoy can be paired with up to eight Descent T2 transceivers (included in the Garmin Descent S1 + T2 bundle version), enabling those on the surface to use the Garmin Dive smartphone app to monitor the diver’s tank pressure, depth, distance and approximate locations on a map within the SubWave sonar network. (Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range.)
• Topside crews can pair and use the Garmin Dive smartphone app for diver communication, exchanging preset messages with to up to eight divers who have paired their Descent T2 transceivers and compatible air-integrated dive computers with the Descent S1 buoy. (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.)
• Up to eight divers can see their distances as well as directions from the Descent S1 buoy, giving them situational awareness while they are diving. (Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range.)
• For positional awareness, divers can track their distance and direction back to the Descent S1 buoy — then, after surfacing, they can sync and review their underwater heatmaps on the Garmin Dive smartphone app to see approximately where they were diving. (Conditions such as surface, waves, chop, objects and diver position can obstruct the signal and reduce range.)
• Battery performance: Up to 15 hours of battery life means the buoy can be deployed for a full day of diving without the need to recharge
• The rugged, compact 2-lb buoy is impact-resistant and rated IPX8 for water resistance up to 10 meters
• Secure Wi-Fi connectivity wirelessly links the buoy to the Garmin Dive smart-device app within a range of up to 60 meters
• MULTI-GNSS SUPPORT: On the surface, support for multiple satellite systems (GPS and GLONASS) improves signal reception in challenging environments
• The perfect companion for divers — Garmin Descent S1 delivers reliable communication, accurate positioning, and easy dive monitoring through the Garmin Dive app

Garmin Descent S1 Diver Communication Buoy Specifications:

• Model Name: Garmin Descent S1 Buoy
• Model Year: 2025
• Color: Red
• Dimension (WxHxD): 5.3" x 8.0" x 8.0"
• Battery life: up to 15 hours
• Connectivity Technology: Bluetooth; Wi-fi
• Weight: 2.2 lbs

In The Box Garmin Descent S1 Diver Communication Buoy (Descent S1 Only): 1x Garmin Descent S1 buoy; Carrying case; Charging/data clip; Tether; Documentation.

In The Box Garmin Descent S1 Diver Communication Buoy with Wearable4U Power Bank Bundle (+Power Bank): 1x Garmin Descent S1 buoy; Carrying case; Charging/data clip; Tether; Documentation; 1x Wearable4U PowerBank.

In The Box Garmin Descent S1 Diver Communication Buoy and Garmin T2 Transceiver with Wearable4U Power Bank Bundle (+Transceiver+Power Bank): 1x Garmin Descent S1 buoy; 1x Garmin Descent T2 Transceiver; Carrying case; Charging/data clip; Tether; Documentation; 1x Wearable4U PowerBank.