Garmin Descent X10 Dive Computer

Garmin Descent X10 dive computer

The Descent X10 is the Garmin for divers who have finished their Open Water course and want their own computer without paying for a smartwatch they did not ask for. It does the job a first computer needs to do, it does it on a big 2.1 inch screen you can actually read, and it runs for up to 50 hours of diving between charges.

It is not a cut-down toy. Under the hood it runs the same Bühlmann ZHL-16c algorithm with gradient factors that Garmin uses across the Descent range, it handles nitrox up to 40 percent, and it has proper scuba, apnoea and gauge modes. What you give up against the dearer Descents is air integration, colour, multi-gas switching and the smartwatch features, and for a lot of divers that is exactly the right trade.

Garmin also builds the housing and bezel from 100 percent recycled ocean-bound plastic, which for a dive computer feels like the right place to start.

• 2.1 inch sunlight-readable monochrome display, 320 x 240 pixels
• Up to 50 hours in dive mode, up to 6 months in standby, rechargeable
• Scuba, apnoea and gauge dive profiles
• Air and nitrox from 21 to 40 percent O2, PO2 up to 1.6
• Bühlmann ZHL-16c with gradient factors and adjustable conservatism
• Rated to 100 metres, 130 g on the included band
• Wireless dive log upload to the Garmin Dive app
• Optional bezel guards in Black, Amp Yellow, Aqua and Purple Iris

Why divers choose the Descent X10

You can read it in UK water

Many entry-level computers have a small segment screen that is fine in the Red Sea and hard work in a green, murky quarry. The X10's 2.1 inch display uses large text and a backlight that switches on with depth or a button press, and you can set it to stay on for the whole dive. In poor visibility, being able to read your no-stop time at a glance is the whole point.

You stop thinking about batteries

Fifty hours of dive time is a full liveaboard week for most people without touching the charger, and six months in standby means it will still be alive when you dig it out for the first dive of the season. No coin cells to swap and no seals to disturb.

It grows with your first year of diving

Plenty of new divers buy a basic computer and then take a nitrox course three months later. The X10 already handles nitrox to 40 percent, has customisable conservatism and gradient factors, and logs every dive to your phone, so it keeps up as your diving gets more varied.

It works for freediving too

Apnoea mode means one computer covers your scuba trips and your freediving sessions. If you split your time between the two, that saves buying a second device.

Features that matter underwater

NDL Aware depth metrics

This shows, in real time, how much no-stop time you would gain or lose by moving up or down. On a wall or a wreck, that turns "should I go shallower?" from a guess into a number, which is exactly what a newer diver needs to learn.

Audible and vibration alerts

Ascent rate, PO2, NDL and decompression alarms come as both a beep and a vibration, and you can set up to 40 custom alerts by depth or time for each dive mode. In a thick hood you may not hear a beep. You will feel the vibration.

Customisable safety stop and conservatism

Safety stops can be set to off, 3 or 5 minutes, and conservatism runs from low to high or custom gradient factors. Instructors and more cautious divers can tighten it up, and you can set deep stops through custom gradient factors if you want them.

Flip-screen mode and a hinged band

Flip-screen mode puts the buttons above the display, which suits people who wear it on the other wrist or just prefer that layout. The hinged silicone band is sized from 140 to 360 mm, so it goes over a wetsuit without a fight.

Replaceable colour bezel guards

Garmin's X10 bezel guards come in Black, Amp Yellow, Aqua and Purple Iris. They protect the bezel and make your computer easy to pick out in a pile of kit, which is handy on a busy boat or when two buddies dive the same model.

Setup sharing and rental mode

Setup sharing syncs your settings to other compatible Descent computers, which is handy if you dive a second Garmin as a backup. Rental mode lets a dive school or club reset the computer between divers in a few button presses.

Why choose the Descent X10

At its price, the X10 sits against the basic wrist computers that most new divers end up with. Its advantage is the screen. A 2.1 inch display with large digits is easier to read than the small segment screens you usually get at this money, and that matters more in UK water than any feature on a spec sheet.

Against the rest of the Garmin range, it is the honest option. The Descent G2 is a watch you can wear every day. The Descent X30 adds a bigger colour screen. The X10 strips it back to the dive computer itself, and if you only wear a computer when you are wet, there is no point paying for the rest.

The real benefit of owning one is that you stop diving rental computers you do not know. Every dive is logged in the same place, your settings are always your settings, and you learn one screen properly instead of a different one every trip.

Who the Descent X10 is for

• New divers buying their first computer after Open Water or Advanced
• Holiday divers who dive a few weeks a year and want something simple and readable
• Nitrox divers who dive one mix and want a clear screen and long battery life
• Divers who also freedive and want one device for both
• Owners of a Mk3i or G2 who want a matching backup computer
• Dive clubs and schools that need a dependable computer with a rental mode

Who it may not be for: if you want tank pressure on your wrist, multi-gas decompression or a watch you wear to work, this is the wrong Garmin. Look at the G2, Mk3i or X50i in our dive computers range, or ask us which fits the diving you actually do.

How to get the best from the Descent X10

Ten minutes on the sofa before your first dive will save you fiddling with menus on the boat.

• Charge it fully and pair it with the Garmin Dive app on your phone before the trip.
• Set water type to salt or fresh to match where you are diving.
• Set your gas. If you are diving nitrox, check the O2 percentage against your analyser reading before every dive.
• Pick your conservatism and safety stop length, and leave them alone until you understand what they change.
• Switch the backlight to always on if you dive in UK water or at night.
• Run a dive in simulation mode so you know where NDL, depth and ascent rate sit on the screen.
• After the dive, sync the log to the app so your entry and exit points are saved.

Specifications

Diving functions

• Colour: black
• SKU: 010-04686-00
• Brand: Garmin
• Garmin lists security updates until at least November 2028

What's included

• Descent X10 dive computer with hinged silicone dive band
• Charging and data cable
• Documentation

Complete your setup

• Garmin bezel guards for Descent X10, in four colours
• Garmin QuickFit bungee mount, choose 26 mm for the X10
• Garmin QuickFit 26 watch bands
• Garmin QuickFit 26 dive watch bands, 3-piece set
• Garmin Descent G2, if you want an everyday watch as well
• Do I need to use a dive computer?
• Oyster Servicing

Buying the Descent X10

The X10 is the computer for divers who want to own their dive data, read their screen and forget about batteries, without paying for features they will never use. It is the simplest way into the Garmin Descent range, and it still runs the algorithm and nitrox support you would find on the dearer models.

If your diving is mostly holidays, UK weekends and the odd freedive, it covers all of it. If you are heading towards technical diving or want air integration, spend more now on the X50i rather than twice later.