Garmin Descent X50i Premium Dive Computer with T2 Air Integration & S1 Subwave Sonar
Garmin Descent X50i Premium Dive Computer with T2 Air Integration & S1 Subwave Sonar is backordered and will ship as soon as it is back in stock.
What's in this bundle
Garmin Descent X50i Premium Dive Computer with T2 Air Integration & S1 Subwave Sonar is backordered and will ship as soon as it is back in stock.
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Product Information
This bundle brings together the three pieces of Garmin's dive communication system: the Descent X50i dive computer, the Descent T2 transceiver, and the Descent S1 diver communication buoy. Built around SubWave sonar, the three components let divers exchange preset messages and monitor tank pressure, depth, and distance with up to 8 divers at once, while the S1 buoy extends that same picture to the surface team.
The Descent X50i is the hub of the system, with a 3-inch color touchscreen, a 20 ATM dive rating, and leakproof metal buttons built for repeated use in the water. Paired with the Descent T2 transceiver, it adds air integration, tracking pressure, depth, air consumption rate, and time remaining for up to 8 tanks, with the T2 itself dive-rated to 20 ATM. The T2 ships with an air spool and documentation alongside the transceiver. DiveView color maps preloaded on the X50i cover bathymetric depth contours for over 4,000 dive sites, and a built-in backup dive light adds a margin of safety in low-visibility conditions.
The Descent S1 buoy rounds out the system by giving surface teams a live view of the dive: tank pressure, depth, distance, and alerts for up to 8 divers, plus return-to-base direction tracking for divers wearing a T2-paired computer. It runs up to 15 hours on a rechargeable battery, connects to the Garmin Dive app over Wi-Fi within 60 m for two-way preset messaging, and stores post-dive heatmaps of exploration areas for review after you're back on the boat.
- 3-Inch Color Touchscreen & 20 ATM Rating - The Descent X50i pairs a large touchscreen display with leakproof metal buttons rated for 200 meters of water depth.
- SubWave™ Sonar Messaging - Exchange preset messages and monitor tank pressure, depth, and distance for up to 8 divers at once.
- Descent T2 Tank Monitoring - Tracks air pressure, depth, air consumption rate, and time remaining for up to 8 tanks, dive-rated to 20 ATM.
- Descent S1 Surface Monitoring - Gives surface teams live tracking of diver tank pressure, depth, distance, and alerts, plus return-to-base direction for T2-paired divers.
- 15-Hour Rechargeable Buoy Battery - The S1 buoy connects to the Garmin Dive app over Wi-Fi within 60 m for two-way messaging throughout the dive.
- DiveView™ Color Maps - Preloaded bathymetric depth contours for over 4,000 dive sites on the X50i.
- Integrated Backup Dive Light - Built into the X50i for added safety in low-visibility conditions.
- Post-Dive Heatmap Review - The Garmin Dive app shows exploration areas covered during the dive after you surface.
- One Connected SubWave System - The X50i, T2, and S1 share the same SubWave sonar network, so diver-to-diver and diver-to-surface communication run on the same protocol without separate setup.
| Garmin Descent X50i, Premium Dive Computer | |
| Specs | What You'll Love |
|---|---|
| Built-in mapping | Yes |
| LED flashlight | Yes |
| Display type | LCD |
| Touchscreen | Yes |
| Water rating | Dive (200 meters) |
| General | |
| Strap material | Elastic nylon with adjustment locking buckles |
| Lens Material | Sapphire crystal |
| Bezel Material | Fiber-reinforced polymer |
| Case material | Fiber-reinforced polymer |
| QuickFit® watch band compatible | Yes (20 mm) |
| Physical size | 62.4 x 98.3 x 24.5 mm, Nylon band: 38 cm |
| Weight | No bands: 253 g, Nylon band (band and buckle): 280 g |
| Leakproof inductive buttons | Yes |
| Display Size | 3.0" diagonal |
| Display resolution | 640 x 360 pixels RGB |
| Color display | Yes |
| Battery life | Medium brightness (default): 16 hours, High brightness: 13 hours, Night dive: 20 hours |
| Charging method | Garmin proprietary clip charger |
| Memory/History | 32 GB |
| Clock Features | |
| Time/date | Yes |
| GPS Time Sync | Yes |
| Automatic daylight saving time | Yes |
| Stopwatch | Yes |
| Sunrise/sunset times | Yes |
| Sensors | |
| GPS | Yes |
| GLONASS | Yes |
| Galileo | Yes |
| Compass | Yes |
| Gyroscope | Yes |
| Accelerometer | Yes |
| Thermometer | Yes |
| Ambient light sensor | Yes |
| Depth sensor | Yes |
| Daily Smart Features | |
| Connectivity | Bluetooth®, ANT®, Wi-Fi®, Subwave™ |
| Smart Notifications | Yes |
| Text response/reject phone call with text (Android™ only) | Yes |
| Weather forecasts | Yes |
| Realtime settings sync with Garmin Connect™ mobile | Yes |
| Find My Watch | Yes |
| Smartphone compatibility | iPhone®, Android™ |
| Tactical Features | |
| Dual grid coordinates | Yes |
| Diving Features | |
| Dive activity maximum operating depth | 200 meters |
| Single-gas mode | Yes |
| Multi-gas mode | Yes |
| Gauge mode | Yes |
| Decompression model | Bühlmann ZHL-16c with gradient factors |
| Nitrox support | Yes |
| Trimix support | Yes |
| Closed Circuit Rebreather (CCR) | Yes |
| Gas mixes | Air, Nitrox and Trimix, up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gases. |
| PO2 | Up to 2.0 with customizable deco PO2 setting |
| Subwave™ Support | Yes |
| Air integration | Yes (via Subwave™) |
| Number of transmitters supported | 8 |
| Gas time remaining | Yes |
| Gas consumption rate | Yes |
| Auto start/end dive | Yes |
| Custom end-dive timeout | Yes (20s to 10m) |
| Safety Stop | Yes (customizable off/3min/5min) |
| Deep Stops | Yes (using custom gradient factors) |
| Customizable conservatism | Yes (low/medium/high or custom using gradient factors) |
| Dive ascent/descent rate indicator | Yes |
| Automatic altitude adjustment | Yes |
| No fly time | Yes |
| Garmin Descent S1 Diver Communication Buoy | |
| Physical Dimensions (W×H) | 8.0 x 5.3 in (203 x 135 mm) |
|---|---|
| Weight | 2.2 lb (981 g) |
| Water Rating | IPX8 to 10 m |
| 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) |
| Battery Type | Internal rechargeable lithium-ion |
| Battery Life | Up to 15 hours |
| Charging Method | Garmin proprietary clip charger with USB‑C connector |
| Wireless Frequency & Power | 2.4 GHz at 19.16 dBm max |
| Connectivity | Bluetooth, Wi‑Fi, ANT, SubWave technologies |
| Surface Transmission Range (Wi‑Fi) | Up to 60 m (197 ft) |
| Underwater Transmission Range (SubWave) | Up to 100 m (328 ft) line of sight |
| Sensors | GPS, GLONASS |
| Garmin Descent T2 Transceiver Tank Pressure Monitoring | |
| Physical Dimensions: | 3.33” x 1.44” x 1.44” (84.50 x 36.52 x 36.52 mm) |
| Battery Type: | 3V CR123A lithium |
| Battery Life: | Up to 100 hours of operation |
| Thread Type: | 7/16" (20 UNF) |
| Operating Temperatures: |
|
| Wireless Frequency: | 2.4 GHz @ 4 dBm |
| Transmission Range: |
|
| Water Resistance: | Rated for dives up to 200 meters |
| Pressure Rating: | 300 bar (4351 psi) |
| Inspection Interval: | Inspect all parts before each dive for any signs of damage. Replace any worn components as needed. Performance remains unaffected by aging under normal conditions. |
- Garmin Descent X50i, Premium Dive Computer
- Garmin Descent S1 Diver Communication Buoy
- Garmin Descent T2 Transceiver Tank Pressure Monitoring
Frequently Asked Questions
What is the Garmin Descent X50i dive computer?
The Descent X50i is Garmin's premium dive computer, built around a 3-inch color touchscreen and rated to 20 ATM (200 meters) with leakproof metal buttons for durability. It includes DiveView color maps preloaded with bathymetric contours for over 4,000 dive sites, multiple customizable dive modes, and an integrated backup dive light. It supports air integration when paired with a Descent T2 transceiver, which is included in this bundle.
How many divers can I communicate with using SubWave sonar on the Descent X50i?
Using SubWave sonar-based diver messaging, the Descent X50i can exchange preset messages and monitor tank pressure, depth and distance for up to 8 divers within a 10-meter range. When paired with a Descent T2 transceiver, it also displays live tank pressure and air-time data.
What is the Garmin Descent S1 Diver Communication Buoy and how does it improve diver safety?
The Descent S1 buoy uses Garmin's SubWave sonar network so a surface team can monitor up to eight divers at once, including tank pressure, depth and real-time alerts. It exchanges two-way preset messages with divers using Descent T2-paired dive computers, and those divers can see distance and direction back to the buoy for return-to-base navigation. It runs on a rechargeable battery rated for up to 15 hours and connects to the Garmin Dive app over Wi-Fi within 60 meters.
What does the Garmin Descent T2 transceiver do, and what's included with it?
The Descent T2 transceiver pairs with the air-integrated Descent X50i to send live tank data, using SubWave sonar to track up to 8 tanks including pressure, depth, air consumption rate and time remaining. It's dive-rated to 20 ATM (200 meters) and runs on a CR123A lithium battery rated for up to 100 hours. The T2 package includes the transceiver, an air spool, and documentation.
What's included in this bundle, and how does it ship?
This bundle includes the Garmin Descent X50i dive computer, the Garmin Descent S1 Diver Communication Buoy, and the Garmin Descent T2 Transceiver. Orders over our free-shipping threshold ship free with next-day delivery, and the product page shows the actual delivery date for your order. Returns are covered under our standard DiveCatalog returns policy.
