Garmin Descent™ X30 Dive Computer
Answer the ocean’s call with Garmin Descent™ X30 Dive Computer. This large-screen dive computer with a 2.4" vibrant colour display makes it easy to view critical information.
Enjoy support for single- and multi-gas dive profiles, including trimix. Navigate below the surface with the 3-axis compass, and maintain situational awareness with audible and vibration alerts. Extend your bottom time with NDL Aware™ depth metrics and see in real time how specific depth changes impact your no-decompression limit (NDL).
Built for divers by divers, Descent X30 features a housing and bezel made with recycled ocean-bound plastics. The rugged design features a 10 ATM dive rating and 4 large, metal leakproof buttons.
Use the surface GPS to navigate to dive sites and mark entry and exit points. Wirelessly upload your dive logs back on deck, and review your dive data - such as depth and ascent profiles and more - in the Garmin Dive™ smartphone app.
Features:
-
2.4″ Colour Display
View all your key information and custom dive screens clearly on a large, easy-to-read colour display. -
Flip-Screen Mode
Rotate the display so the buttons sit on top. Scroll through up to three data fields per page, with large metal buttons designed for easy use even when wearing gloves. -
Multiple Dive Profiles
Choose from a range of dive modes, including single-gas, multi-gas, and Trimix. -
NDL Aware™ Depth Metrics
Get real-time insights that show how depth changes affect your no-decompression limit, helping you extend your bottom time. -
Surface GPS and Compass
Mark your surface entry and exit points using advanced GPS, and stay oriented underwater with the built-in 3-axis compass. -
Eco-Friendly Design
The housing and bezel are made entirely from recycled ocean-bound plastics. -
Dynamic Depth Chart
Track your depth history throughout the dive and see how it influences your decompression plan, helping guide a safe ascent. -
Comfortable Dive Bands
The durable hinged silicone strap fits easily over your wetsuit. The X30 is also compatible with 26 mm QuickFit® bands, including the bungee mount. -
Dive Log
Save and review detailed records of your dives, with easy sharing via the Garmin Dive™ app. -
Garmin Dive™ App
Sync your dive computer with the Garmin Dive™ smartphone app to upload logs automatically and keep all your dive data in one place. -
Water Temperature Sensor
Monitor temperature changes and locate the thermocline with the built-in thermometer. -
Surface Interval Tracking
Plan multiple dives in a day with features that help ensure your body has enough time to safely off-gas. -
Alerts & Warnings
Stay aware underwater with clear audible tones and vibration alerts. -
inReach® Connectivity
Pair with a compatible inReach satellite communicator (with dive case) to trigger an SOS message when you’re at the surface.
General:
| Strap material | Silicone |
|---|---|
| Lens Material | Chemically strengthened glass |
| Bezel Material | Fiber-reinforced polymer |
| Case material | Fiber-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: 160 g With bands: 198.2 g |
| Leakproof inductive buttons | Yes |
| Display Size | 2.4″ diagonal |
| Display Resolution | 320 x 240 pixels RGB |
| Colour display | Yes |
| Large font option | Yes |
| 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 |
Dive Specifications:
| Dive activity maximum operating depth | 100 metres |
|---|---|
| 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 |
| Gas mixes | Air, Nitrox and Trimix, up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gasses. |
| PO2 | Up to 2.0 with customisable deco PO2 setting |
| Auto start/end dive | Yes |
| Custom end-dive timeout | Yes (20s to 10 m) |
| Safety Stop | Yes (customisable 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 |
| Dive planner | Yes (basic NDL + multi-gas deco planner) |
| Backlight | Yes (configurable intensity; always on) |
| Automatically saves dive entry and exit locations | Yes |
| Sync dive log to Garmin Dive™ Mobile app | Yes |
| Custom dive data screens | Yes |
| 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) |
| Built-in barometer and tide tables for Boating | Yes (downloadable tides) |
In the box:
- Descent X30 dive computer with hinged silicone dive band
- Charging clip/cable
- Screen protector kit
- Documentation
Video:
Learn More About the Garmin Descent X30
For a deeper dive into everything the Garmin Descent X30 has to offer, including a detailed comparison with the Descent X50i, expert tips, and guidance on which model is right for your diving style, check out our full blog: Read the Garmin Descent X30 Blog
Video Consultation Appointments:
We now offer live video streaming consultations for divers who are unable to come into our store. This service gives everyone the opportunity to have a face-to-face conversation with one of our highly experienced staff to discuss equipment options or help with the fitting of drysuits, undersuits, wetsuits, masks, and prescription masks. Visit our booking page to request your video consultation today: Book Your Video Consultation.
We offer free tracked UK standard delivery on orders over £50 (Excluding Weights and Cylinders, as they must go on a separate service to your order)
Standard UK delivery and Next Business Day UK delivery rates are calculated at checkout and offers a number of courier options for maximum convenience to you.
International shipping rates depend on items, shipment weight and destination. Shipping costs are calculated at checkout.
Estimated delivery times are shown during checkout and reflect your chosen delivery method. More Details
60 Day Stress Free Returns
If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!
Mike's Dive Store offer an extended returns policy of 60 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back, and we will either exchange it or offer a full refund less any postage costs. Too easy!
Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee, but we will let you know about these items before we 'special order' them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return. More Details
Returning To Chiswick Store
We want to make your shopping experience as seamless and enjoyable as possible, even when it comes to returns. That’s why we offer hassle-free returns at our Chiswick store. But there’s more—when you visit to make a return, you can also pre-order items to be available for collection. This means we’ll have a range of sizes ready for you to try on, ensuring you find the perfect fit before leaving the store.
Shop with Confidence, Wherever You Are
To make things even easier, we offer complimentary video consultations with our expert team. Whether it’s before or after your purchase, our specialists can guide you through sizing, fit, and styling—all from the comfort of your home. It’s like having your own personal VIP shopping experience, tailored just for you.
From returns to reorders, we’re here to help you find exactly what you need with zero stress.
Book Video Consultation: Book Now
We offer the option for customers to choose ‘Pickup in store’ as a shipment method, allowing your order to be picked up from our Chiswick store at a time and date that works for you (within our business hours). The process is really easy, but we'll run through it here:
Step 1 - Add products to your cart:
Browse our vast selection of diving and snorkelling equipment, adding the kit you want to your cart.
Step 2 - Head to your cart:
Click on the cart icon to see a summary of the items you are about to purchase.
Step 3 – Review Your Order and Proceed to Checkout:
Once you're satisfied with the items in your cart, you can add a note to your order under the "Order Summary" section if desired. When you're ready to proceed, simply click "Checkout" to complete your order.
Step 4 - Customer Information:
If you have a Mike's Dive Store account, simply log in to autofill your details. If not, enter your email address, select ‘Pickup in Store,’ and then click ‘Continue to Payment’ to proceed.
Step 5 – Payment & Billing Details:
Select your preferred payment method and enter your payment information. Below, provide your billing details. If you're logged into your account, please double-check that your billing and contact information are up to date.
Step 6 – Review Order:
After entering your payment details, click ‘Review Order’ to proceed with placing your order. You will receive an email confirmation with your unique order number. We will notify you when your order is ready for collection, usually within 4 hours or sooner during our opening hours (Monday to Saturday, 10 AM to 6 PM). Please note that our hours may vary during the Christmas and New Year periods.
Our London Store Information:
Address:
Mike's Dive Store, 113 Power Rd, Chiswick, West London, W4 5PY
Telephone:
Local: 01202 037162
International: 0044 1202 037162
Email:
All Enquiries - support@mikesdivestore.com
Store Opening Times:
Mon - Fri: 10am - 6pm
Sat: 10am - 5pm
Sun: Closed
Need Help?
Our expert diving team is here to assist with your order, sizing, or product selection. We're divers ourselves, ready to support you!
Chat Hours:
Monday - Friday: 09:00 AM - 05:50 PM GMT
Prefer a call back? Just request it through the chat bubble!
Store Location
Mike's Dive Store
113 Power Rd, Chiswick, West London, W4 5PY
Store Hours
Mon - Fri: 10 AM - 6 PM
Sat: 10 AM - 5 PM
Sun: Closed
Bank Holidays: Store & Warehouse Closed (no dispatch)
Online Video Consultations
Unable to visit us? Book a live video consultation for tailored advice on equipment, fitting, or specialized gear. Get expert guidance from our team, face-to-face. Book Now
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