Garmin Descent Series
Garmin Descent™ X10 Essential Dive Computer
A dive computer built to be read at depth. Big 2.1-inch always-on display, air and nitrox, scuba, apnea and gauge modes, NDL Aware depth metrics and up to 50 hours of dive time. Dives log automatically to the Garmin Dive app.
Our Take
The X10 does one job and does it clearly. The 2.1-inch screen shows a few large numbers instead of a crowded page, so depth, time and NDL are readable at a glance in low visibility. That matters more to a new diver than any feature list.
NDL Aware is the standout. It shows how drifting a little shallower or deeper changes your remaining no-decompression time, which helps you manage bottom time instead of reacting to it. Under the hood it runs the same Bühlmann ZHL-16c algorithm with gradient factors as Garmin’s higher-end Descent computers.
Know what it is not: there is no built-in GPS, no compass and no health or fitness tracking. It is not an everyday watch. If you want one device for diving and daily wear, look at the Descent G2. If you want a clear, reliable dive computer for your first years of diving, a rental fleet or a backup, this is it.
Tap for details
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A 2.1-inch always-on, sunlight-readable MIP screen with large numbers you can read at depth, on a bright boat deck or in murky water.
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Shows in real time how moving shallower or deeper changes your no-decompression limit, so you can manage bottom time as you dive.
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Single-gas scuba on air or nitrox from 21% to 40% O2, PO2 up to 1.6, with one bottom gas and up to 11 backup gases.
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Three dive modes cover recreational scuba, breath-hold freediving and gauge mode for depth and time only.
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Up to 50 hours of dive time and up to 6 months in standby on a rechargeable battery.
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Dives upload automatically over Bluetooth with entry and exit locations from your phone, plus gear usage tracking.
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Dive shops, schools and charters can match settings to each diver’s skill level and reset quickly between users.
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Use it as a backup to a compatible Descent computer and copy dive setups from your primary to the X10.
Dive Data and Alerts
Customizable dive data screens put the numbers you care about in large text.
During the Dive
- Depth
- Dive time
- No-decompression limit (NDL)
- NDL Aware depth metrics
- Ascent and descent rate indicator
- Decompression status and stops
- PO2
- Water temperature
At the Surface
- Surface interval
- No-fly time
- N2 loading
- CNS
- OTU
- Tissue compartment status
- Basic NDL dive planner
Alerts
- Audible and vibration alarms
- Ascent rate, PO2, OTU, NDL and deco alerts
- Up to 40 custom depth or time alerts per dive mode
- 24-hour deco violation warning
- Backlight on by depth or button press
Specifications
| Part number | 010-04686-00 |
|---|---|
| Display | 2.1-inch monochrome MIP, 320 x 240 pixels, always-on, sunlight-readable |
| Backlight | Adjustable, activates by depth or button |
| Lens | Chemically strengthened glass |
| Case and bezel | Fiber-reinforced polymer, 100% recycled ocean-bound plastic |
| Buttons | Leakproof inductive buttons; flip-screen mode |
| Dimensions | 56.4 x 72.2 x 20.2 mm (2.2 x 2.8 x 0.8 in) |
| Weight | 90 g without band, 130 g with band |
| Band | Hinged silicone, fits 140 to 360 mm; 26 mm QuickFit compatible |
| Depth rating | 100 m (328 ft) |
| Dive modes | Single-gas scuba, apnea, gauge |
| Gases | Air and nitrox, 21% to 40% O2; 1 bottom gas plus up to 11 backup gases |
| PO2 limit | Up to 1.6 |
| Algorithm | Bühlmann ZHL-16c with gradient factors |
| Conservatism | Low, medium, high or custom gradient factors |
| Safety stop | Off, 3 or 5 minutes; configurable deep stops |
| Altitude | Automatic altitude adjustment |
| Sensors | Depth sensor, thermometer |
| GPS and compass | None built in; location tagging via paired phone |
| Battery | Rechargeable lithium-ion; up to 50 hours dive mode, up to 6 months standby |
| Charging | Garmin charging cable (included) |
| Connectivity | Bluetooth to the Garmin Dive app (iPhone and Android) |
| Memory | 120 MB, up to 200 dives |
| Dive shop features | Rental mode, backup support mode, setup sharing, passcode lock |
| Not included | Trimix, rebreather mode, air integration, maps, dive light, diver messaging |
Compare Garmin Descent Dive Computers
| Feature | Descent X10 (this product) | Descent G2 | Descent Mk3 |
|---|---|---|---|
| Dive computer type | Dedicated dive computer | Dive computer watch | Multisport dive watch |
| Display | 2.1-inch MIP, large numbers | Color touchscreen | Color |
| Single-gas scuba, apnea, gauge | Yes | Yes | Yes |
| Air and nitrox | Yes | Yes | Yes |
| Trimix | No | Yes | Yes |
| Rebreather (CCR) mode | No | Yes | Yes |
| Built-in GPS | No | Yes | Yes |
| Compass | No | Yes | Yes |
| Health and sports tracking | No | Yes | Yes |
| Maps and music | No | No | Yes |
| Air integration | No | No | Mk3i only |
| Rental mode for dive shops | Yes | Not listed | Not listed |
| Best for | New divers, rental fleets, backup | Divers who want one watch for diving and daily life | Technical divers who want a full multisport watch |
Frequently Asked Questions
Is the Descent X10 a smartwatch?
No. The X10 is a dedicated dive computer. It has no built-in GPS, compass, heart rate, sleep or fitness tracking. Dive locations are tagged using your paired phone’s GPS.
Does the Descent X10 support nitrox?
Yes. It supports air and nitrox from 21% to 40% O2 with a PO2 limit up to 1.6. It does not support trimix, rebreathers or air integration.
What decompression algorithm does it use?
Bühlmann ZHL-16c with gradient factors. Conservatism can be set to low, medium, high or custom gradient factors, with configurable deep stops and a safety stop of off, 3 or 5 minutes.
How deep is the Descent X10 rated?
It is rated to 100 meters (328 feet).
How long does the battery last?
Up to 50 hours in dive mode and up to 6 months in standby. It charges with the included Garmin charging cable.
Can I use it as a backup computer?
Yes. It has a backup support mode and can copy dive setups from a compatible Descent primary computer.
Does it work with the Garmin Dive app?
Yes. Dives upload over Bluetooth to the Garmin Dive app on iPhone and Android, which logs entry and exit locations, tracks gear usage and includes a device simulator for practicing dives.
What colors are available?
The X10 comes in black. Replaceable bezel guards in Amp Yellow, Aqua, Purple Iris and Black are sold separately, and it accepts 26 mm QuickFit bands.
Real People. Real Answers.
Questions about setup, nitrox settings or the Garmin Dive app? Talk to our Pennsylvania team at 1-800-403-8285.
HRM USA Inc, 49 Richard Rd, Warminster, PA 18974
For use by certified divers only. A dive computer does not replace proper dive training. Read the Garmin owner’s manual before use.
CA Residents: Click here for Proposition 65 warning.