Garmin’s new Descent X10 puts the core of its dive computer software on a big, clear screen for £299.99 / $349.99, the lowest price of any current Descent. It went on sale in the US on 3 November 2026, UK orders open on 6 November, and it is aimed at divers on their first course, dive schools, and anyone who wants a backup to a Descent watch.
It is the sixth model in Garmin’s Descent range and the cheapest, so most buyers is what the extra money buys elsewhere in the range. is cover that below, with full figures on the Descent X10 specifications page and buying advice for every model in the Which Garmin Descent to Buy guide.
Garmin Descent X10
Big, clear dive computer with a 50-hour battery, ideal as a first computer or a backup.
What the Descent X10 does underwater
The X10 runs the same Bühlmann ZHL-16c decompression model with gradient factors as the £1,099.99 Descent Mk3, so its no-decompression times are calculated the same way. You can set conservatism to low, medium or high, or enter your own gradient factors, and set a three- or five-minute safety stop.
- Scuba, apnea and gauge dive modes.
- Air and nitrox from 21% to 40% oxygen, with PO2 alarms up to 1.6.
- NDL Aware shows how moving up or down changes your remaining no-decompression time.
- Sound and vibration alarms for ascent rate, PO2, NDL and decompression, plus up to 40 custom alerts by depth or time.
- Automatic start when you go under, and a surface screen with your interval, nitrogen loading and no-fly time.
- Flip-screen mode puts the buttons above the display for divers who prefer them there.
The dive planner calculates no-decompression limits only, and it is not a trimix or rebreather mode. Anyone heading for decompression or technical training will outgrow it.
A screen built for murky water
The 2.1-inch monochrome memory-in-pixel display shows a few large numbers rather than a busy page, which is what a new diver needs to read through a mask in poor visibility. The backlight comes on at depth or at a button press, and it can stay on for the whole dive. The buttons are leakproof inductive types with no openings to flood.
The unit weighs 90g, or 130g on its hinged silicone band, which fits over a wetsuit. It also takes 26mm QuickFit straps and Garmin’s bungee mount. The housing and bezel are made from recycled ocean-bound plastic, and replaceable bezel guards in Amp Yellow, Aqua, Purple Iris and Black cost £17.99 each.
Battery life: 50 hours of diving
Garmin rates the X10 for up to 50 hours in dive mode and six months in standby. That is longer than any current Descent except the 51mm Mk3i, and it covers a week-long liveaboard trip without a charger. By comparison, the colour Descent X30 lasts up to 30 hours and the Descent X50i up to 16.
Built for dive schools and rental fleets
Rental mode lets a dive school set each unit to a student’s level and reset it between customers, and the coloured bezel guards help a shop tell its units apart. Garmin also lets you share settings between compatible Descent computers, so the X10 can mirror the gases, conservatism and alerts of a Descent watch and act as a ready-configured backup.
The Garmin Dive app
The X10 has Bluetooth but no GPS. It syncs your dive log to the Garmin Dive app on your phone, which records where you entered and left the water, tags the dive site and tracks how often you use each piece of gear. The app can also simulate a full dive on the X10, so a student can practise a scenario on dry land before getting in the water.
Where the X10 sits in the Descent range
Garmin now sells six Descent models in two shapes. The X10, X30 and X50i are large-format computers you strap on only to dive, and the G1, G2 and Mk3 are watches you wear all week that track training, sleep and health between dives. The X10 is the entry point to the large-format side.
| Model | Format | What it adds over the X10 | Price |
|---|---|---|---|
| Descent X10 | 2.1-inch monochrome computer | The baseline: single-gas nitrox, apnea and gauge, 50-hour battery | £299.99 / $349.99 |
| Descent X30 | 2.4-inch colour computer | Trimix and multi-gas deco planning, built-in GPS, compass, custom data pages | £559.99 at Garmin UK (£649.99 / $749.99 at launch) |
| Descent X50i | 3-inch colour touchscreen computer | Air integration and diver messaging with T2 transceivers, rebreather mode, dive site maps, dive light, 200m rating | £1,199.99 at Garmin UK (£1,329.99 / $1,499.99 at launch) |
| Descent G1 | Monochrome MIP watch, optional solar | Trimix, rebreather, GPS and compass, plus Garmin’s sports and health tracking, in a watch | From £479.99 / $549.99 |
| Descent G2 | AMOLED watch | As the G1 with a colour touchscreen and Dive Readiness | £589.99 / $699.99 |
| Descent Mk3 and Mk3i | AMOLED watch, 43mm or 51mm | A Fenix-class multisport watch with maps and music, air integration on the Mk3i, 200m rating | From £1,099.99 / $1,199.99 |
The X30 is the model most X10 buyers will weigh against it, because it adds the features a regular diver grows into: trimix and multi-gas decompression planning, built-in GPS that marks entry and exit points without a phone, a 3-axis compass for navigation underwater, and a colour screen with custom data pages. The X50i goes further with air integration, SubWave messaging between divers, rebreather mode, dive site maps and a dive light.
None of the three X-series computers tracks heart rate, sleep or training, because they are not meant to be worn between dives. For that, you need a Descent watch, and the Descent buying guide linked above explains which of the three suits which diver. Garmin promises security updates for the X10 until at least November 2028.
Who should buy the Descent X10?
It suits a diver on an Open Water or Advanced course who wants their own computer rather than a rental, because it covers every dive those courses teach and costs £260 less than the X30. It also suits a dive centre replacing a rental fleet and a Descent watch owner who needs a second computer with is easier-to-read screen. Divers who already plan decompression stops or use more than one gas should buy the X30 instead.
Garmin Descent X10
Big, clear dive computer with a 50-hour battery, ideal as a first computer or a backup.
Garmin’s full specifications are on the Descent X10 product page. For other Garmin dive watches and computers, see the Garmin specifications database and the Garmin hub.
Quick answers
How much does the Garmin Descent X10 cost?
The Descent X10 costs £299.99 in the UK and $349.99 in the US. Optional bezel guards cost £17.99 each.
When can I buy the Descent X10?
Garmin announced it on 3 November 2026, and it went on sale in the US the same day. UK orders open on 6 November 2026.
Does the Descent X10 have GPS?
No. The X10 records your entry and exit locations through the Garmin Dive app on your phone. The Descent X30 and X50i have built-in GPS.
Can the Descent X10 dive with nitrox?
Yes. It supports air and nitrox from 21% to 40% oxygen. It does not support trimix or rebreathers.
How long does the Descent X10 battery last?
Garmin rates it for up to 50 hours in dive mode and up to six months in standby, on a rechargeable battery.
Last Updated on 4 November 2026 by tfk the5krunner
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. See the gear tfk uses. ID
