Descent™ X30
Premium Dive Computer
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ANSWER THE OCEAN’S CALL
The Descent X30 dive computer features a vibrant 2.4″ display and a housing and bezel made with recycled ocean-bound plastics. With four large metal buttons, up to 30 hours of battery life and support for multiple dive profiles, it’s perfect for your next dive.
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 2.4″ COLOUR DISPLAYSee critical information and custom dive screens at a glance on a large and easy-to-read colour display. |
 FLIP-SCREEN MODEOrient the buttons on top of the display with flip-screen mode. Navigate your custom dive screens with up to three data fields per page. The large metal buttons are easy to use, even with gloves on. |
 MULTIPLE DIVE PROFILESEnjoy support for single- and multi-gas dive profiles, including trimix. |
 NDL AWARE™ DEPTH METRICSExtend your bottom time with NDL Aware depth metrics that work in real time to show how specific depth changes can impact your no-decompression limit (NDL). |
 SURFACE GPS AND COMPASSMark your surface entry and exit points with advanced satellite connectivity. Find your target before you dive with this GPS tool, and navigate underwater with the 3-axis digital compass. |
 ECO-FRIENDLY DESIGN100% of the plastic used in the dive computer’s housing and bezel is made with recycled ocean-bound plastics. |
DIVING
DYNAMIC DEPTH CHARTSee your depth history during a dive, and get a clear understanding of where you have been and how it affects your decompression plan to help guide your ascent. |
DIVE BANDSThe comfortable and durable hinged silicone dive band fits easily over your wetsuit. Descent X30 is also compatible with 26 mm QuickFit® bands, including the bungee mount. |
DIVE LOGStore and review data for all your dives — and share via the Garmin Dive™ app. |
GARMIN DIVE APPPair the app with your Descent dive computer to automatically sync and upload your dive logs. |
WATER THERMOMETERFind the thermocline with the onboard water temperature sensor. |
SURFACE INTERVAL TRACKINGThis feature helps you plan multiple dives in a day to ensure your body has enough time to properly off-gas. |
STAY ALERTIncrease situational awareness with audible and vibration alerts. |
INREACH® CONNECTIVITYWhen paired with an inReach satellite communicator and dive case, remotely trigger an SOS message when you are above the surface1. |
Satellite subscription required. Some jurisdictions regulate or prohibit the use of satellite communication devices. It is your responsibility to know and follow all applicable laws in the jurisdictions where the device is intended to be used.
Engineering enhancements are ongoing and may not be reflected in the pictures, videos and specifications.
What You'll Love
| Watch display type | LCD |
| Water rating | Dive (100 metres) |
General
| Strap material | Silicone |
| Lens material | Chemically strengthened glass |
| Bezel material | Fibre-reinforced polymer |
| Case material | Fibre-reinforced polymer |
| QuickFit™ watch band compatible | Yes (26 mm) |
| Physical size | 78.7 x 61.8 x 24.7 mm Silicone band: 140-360 mm |
| Weight | No bands: 159 g With bands: 198.4 g |
| Leakproof inductive buttons | ✔ |
| Display Size | 2.4″ diagonal |
| Display Resolution | 320 x 240 pixels RGB |
| Colour display | ✔ |
| Large font option | ✔ |
| Battery type | Lithium ion |
| Battery life | Medium brightness (default): 30 hours High brightness: 10 hours Night dive: 47 hours |
| Charging method | Garmin proprietary clip charger |
| Memory/history | 4 GB |
Clock features
| Time/date | ✔ |
| GPS time sync | ✔ |
| Automatic daylight saving time | ✔ |
| Stopwatch | ✔ |
| Sunrise/sunset times | ✔ |
Sensors
| GPS | ✔ |
| GLONASS | ✔ |
| GALILEO | ✔ |
| Compass | ✔ |
| Gyroscope | ✔ |
| Accelerometer | ✔ |
| Thermometer | ✔ |
| Ambient light sensor | ✔ |
| Depth sensor | ✔ |
Daily smart features
| Connectivity | Bluetooth®, ANT+®, Wi-Fi®, SubWave™ |
| Smart NotificationsSmart Notifications | ✔ |
| Text response/reject phone call with text (Android™ only) | ✔ |
| Weather forecasts | ✔ |
| Realtime settings sync with Garmin Connect™ mobile | Yes (also with Garmin Dive app) |
| Smartphone compatibility | iPhone®, Android™ |
| Passcode | ✔ |
Activity profiles
| Dive | Diving |
Tactical features
| Dual grid coordinates | ✔ |
Diving features
| Dive activity maximum operating depth | 100 metres |
| Single-gas mode | ✔ |
| Multi-gas mode | ✔ |
| Gauge mode | ✔ |
| Decompression model | Bühlmann ZHL-16c with gradient factors |
| Nitrox support | ✔ |
| Trimix support | ✔ |
| 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 customisable deco PO2 setting |
| Auto start/end dive | ✔ |
| Custom end-dive timeout | Yes (20s to 10 m) |
| Safety Stop | Yes (customisable off/3min/5min) |
| Deep Stops | Yes (using custom gradient factors) |
| Customisable conservatism | Yes (low/medium/high or custom using gradient factors) |
| Dive ascent/descent rate indicator | ✔ |
| Automatic altitude adjustment | ✔ |
| No fly time | ✔ |
| Dive planner | Yes (basic NDL + multi-gas deco planner) |
| Backlight | Yes (configurable intensity; always on) |
| Automatically saves dive entry and exit locations | ✔ |
| Sync dive log to Garmin Dive™ Mobile app | ✔ |
| Custom dive data screens | ✔ |
| Alerts & alarms | Audible and vibration alarms for ascent rate, PO2, CNS/OTU, NDL, deco, gas switching. Customisable (up to 40) audible and/or vibration per dive mode, based on depth or time |
| 3-axis dive compass | Yes (with adjustable heading, quick change to 90R, 90L and reciprocal). Indicates degrees and direction back to set heading |
| Missed Deco Lockout | Yes (can be disabled prior to dive with user acknowledgement) |
| Residual Tissue Loading Reset | Yes (on the surface with user acknowledgement) |
| Surface diver status widget | Yes (surface interval, N2/HE loading, CNS, OTU and tissue compartment status) |
Boating features
| Built-in barometer and tide tables | Yes (downloadable tides) |
Training, planning and analysis features
| GPS speed and distance | ✔ |
| Touch and/or button lock | ✔ |
| Activity history on watch | ✔ |
Outdoor recreation
| Point-to-point navigation | ✔ |
| Explore Nearby | ✔ |
| REFERENCE POINT | ✔ |
| Distance to destination | ✔ |
| GPS coordinates | ✔ |
Security Information
| Security updates until at least (YYYY-MM-DD) | 2027-09-25 |
- Descent X30 dive computer with hinged silicone dive band
- Charging clip/cable
- Screen protector kit
- Documentation