Garmin Descent S1 Diver Communication Buoy
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Garmin Descent S1 Diver Communication Buoy is backordered and will ship as soon as it is back in stock.
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Product Information
The Garmin Descent S1 Diver Communication Buoy is a surface buoy that uses Garmin SubWave sonar networking to track, monitor and exchange preset messages with up to eight divers wearing a compatible Descent dive computer paired with a Descent T2 transceiver. It runs on a built-in rechargeable lithium-ion battery rated for up to 15 hours and carries an IEC 60529 IPX8 water rating to 10 m (33 ft).
Who it is for
This buoy is built for dive operations that need a link between the water and the surface: boat crews, instructors and guides supervising a group, research and work teams, and buddy pairs who want a fixed reference point to navigate back to. Surface staff can watch connected divers' tank pressure, depth and location in the Garmin Dive app, receive automatic alerts such as low-pressure alarms, and send preset messages down to the team.
Key details
- SubWave sonar reaches up to 100 m (328 ft) line of sight underwater; Wi-Fi reaches up to 60 m (197 ft) at the surface and ANT/Bluetooth up to 10 m (33 ft).
- Up to 15 hours per charge from the internal rechargeable lithium-ion battery, charged with the Garmin proprietary clip charger with USB-C connector.
- 8.0 x 5.3 in (203 x 135 mm), 2.2 lb (981 g), with GPS and GLONASS for surface position.
- Operating and storage temperature -20 to 60 C (-4 to 140 F); underwater 0 to 40 C (32 to 104 F); charging 0 to 45 C (32 to 113 F).
- Post-dive heatmaps of the area explored can be reviewed in the Garmin Dive smartphone app.
Compatibility and sizing
The buoy pairs with the Garmin Dive smartphone app over Wi-Fi, and with Descent dive computers that support messaging when they are paired with a Descent T2 transceiver. Not all features are available with older or incompatible devices, so update every device to the latest software before the dive.
What's in the box
- Descent S1 buoy
- Carrying case
- Charging/data clip
- Tether
- Documentation
DiveCatalog.com is an authorized Garmin dealer and a dive shop in Irvine, California since 2003. Call or chat with us if you want help confirming that your Descent computer and T2 transceiver will connect to the buoy.
- SubWave sonar network supports tracking, monitoring and messaging with up to eight divers at once.
- Remote diver monitoring shows connected divers' tank pressure, depth and location to surface users in the Garmin Dive app.
- Two-way preset messaging between the surface and divers using a compatible Descent dive computer paired with a Descent T2 transceiver.
- Return-to-buoy navigation gives divers distance and direction, or a compass heading generated by their dive computer.
- Automatic alerts including low-pressure alarms are relayed to the surface crew.
- Underwater range up to 100 m (328 ft) line of sight over SubWave sonar.
- Surface connectivity over Wi-Fi up to 60 m (197 ft) and ANT/Bluetooth up to 10 m (33 ft).
- Rechargeable lithium-ion battery built in and rated for up to 15 hours of use.
- Clip charging through the Garmin proprietary charging/data clip with USB-C connector.
- Post-dive heatmaps of the explored area can be reviewed in the Garmin Dive smartphone app.
- GNSS positioning with GPS and GLONASS for surface location tracking.
- Water rated IPX8 per IEC 60529 to 10 m (33 ft), in a 2.2 lb (981 g) housing.
| Physical Dimensions (W x H) | 8.0 x 5.3 in (203 x 135 mm) |
| Weight | 2.2 lb (981 g) |
| Water Rating | IEC 60529 IPX8 up to 10 m (33 ft) |
| Battery Type | Rechargeable, built-in lithium-ion |
| Battery Life | Up to 15 hours |
| Charging Method | Garmin proprietary clip charger with USB-C connector |
| Operating & Storage Temperature | -20 to 60 C (-4 to 140 F) |
| Underwater Temperature Range | 0 to 40 C (32 to 104 F) |
| Charging Temperature Range | 0 to 45 C (32 to 113 F) |
| Wireless Frequency & Power | 2.4 GHz at 19.16 dBm maximum |
| Connectivity | Bluetooth, Wi-Fi, ANT, SubWave |
| Surface Transmission Range (ANT/Bluetooth) | Up to 10 m (33 ft) |
| Surface Transmission Range (Wi-Fi) | Up to 60 m (197 ft) |
| Underwater Transmission Range (SubWave sonar) | Up to 100 m (328 ft) line of sight |
| Sensors | GPS, GLONASS |
| Divers Supported | Up to 8 |
| EU SAR | <0.308 W/kg (torso, limb) |
| Part Number | 010-02546-00 |
- Descent S1 buoy
- Carrying case
- Charging/data clip
- Tether
- Documentation
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
What do divers need to connect to the Descent S1 buoy?
Each diver needs a Descent dive computer that supports the messaging features, paired with a Descent T2 transceiver. That combination lets the diver send and receive preset messages with the surface and see distance and direction back to the buoy. The buoy supports up to eight connected divers. Garmin notes that not all features work with older or incompatible devices, so update everything to the latest software.
How far does the Descent S1 buoy reach underwater?
SubWave sonar transmission reaches up to 100 m (328 ft) line of sight underwater. At the surface, the buoy connects to the Garmin Dive app over Wi-Fi at up to 60 m (197 ft), and over ANT or Bluetooth at up to 10 m (33 ft). Obstructions and terrain reduce line of sight, so real-world sonar range varies with the dive site.
How long does the battery last and how is it charged?
The Descent S1 has a built-in rechargeable lithium-ion battery rated for up to 15 hours. It charges through the included Garmin proprietary charging and data clip with a USB-C connector. Garmin specifies a charging temperature range of 0 to 45 C (32 to 113 F), so charge the buoy indoors or in the shade rather than on a hot deck.
Can the Descent S1 go underwater?
Yes, within limits. The buoy is water rated to IEC 60529 IPX8 up to 10 m (33 ft), so brief submersion and surface conditions are covered, but it is designed to float and operate at the surface while divers work below. Its underwater operating temperature range is 0 to 40 C (32 to 104 F), and storage range is -20 to 60 C (-4 to 140 F).
