Garmin Descent S1 Buoy
Meet the Garmin Descent S1 Buoy – a genuinely game‑changing innovation in dive safety and communication. This rugged smart buoy seamlessly links your dive group with your topside crew in real time, bringing greater situational awareness and stress‑free connection to every dive.
Packed with intelligent features, the Garmin Descent S1 Buoy bridges the gap between divers and the surface team. It enables real-time tracking of multiple divers, displays critical data like tank pressure and depth, and provides directional guidance to help divers navigate back to the buoy. With built-in GPS, two-way preset messaging, and seamless integration with the Garmin Dive™ app, it also offers post-dive heatmap analysis and easy wireless syncing. The result is a compact, reliable tool that enhances safety, coordination, and communication on every dive.
Features:
- Remote Diver Monitoring
Surface crews can monitor up to eight divers using compatible Descent dive computers paired with T2 transceivers, receiving real-time updates on tank pressure, depth, distance, and direction via the SubWave sonar network. Automatic alerts can notify topside if a diver approaches critical depth or tank pressure thresholds, helping ensure timely responses in case of potential issues.
- Two-Way Messaging
Using the Garmin Dive app, surface crews can send and receive preset messages to divers equipped with Descent T2 transceivers and compatible dive computers — allowing quick alerts in case of emergencies or important updates. Additionally, the Descent S1 Buoy helps boost the underwater communication range between divers, keeping teams better connected during the dive.
- Diver Location Tracking
Surface teams can view the approximate distance to each diver connected to the SubWave sonar network, with tracking possible up to 100 metres from the Descent S1 Buoy.
- Find My Buoy
Divers connected to the SubWave network can view both their distance and direction back to the Descent S1 Buoy, offering a reliable reference point and enhancing spatial awareness during the dive.
- Post-Dive Review
Once back on the surface, divers connected to the network can sync their dive data with the Garmin Dive app to view approximate underwater heatmaps, helping them visualise and review where they explored during the dive.
- Rugged Design
The Descent S1 Buoy is lightweight at under one kilogram, built tough with impact-resistant materials, and rated IPX8 for water resistance down to 10 metres.
Video
Specs:
| Physical dimensions (WxH) | 203 x 135 mm (8.0″ x 5.3″) |
|---|---|
| Weight | 981 g (2.2 lbs) |
| Battery type | Internal rechargeable lithium-ion |
| Battery life | Up to 15 hours |
| Charging method | Garmin proprietary clip charger cable with USB-C connector |
| CONNECTIVITY | BLUETOOTH®, Wi-Fi®, ANT®, Subwave™ |
| Sensors | GPS, GLONASS |
| Water rating | IPX8 to 10 m |
| Operating and storage temperature range | From -20 to 60° C (from -4 to 140° F) |
| Underwater temperature range | From 0 to 40° C (from 32 to 104° F) |
| Charging temperature range | From 0 to 45° C (from 32 to 113° F) |
| Wireless frequency and transmit power | 2.4 GHz @ 19.16 dBm maximum |
| Surface transmission range for Wi‑Fi technology | Up to 60 m (197 ft) |
| Underwater transmission range for SubWave sonar technology | Up to 100 m (328 ft) line of sight |
Compatible with:
- Descent T2 transceiver
- Descent Mk3i dive computer (43mm and 51mm)
- Descent X50i dive computer
- Garmin Dive™ app (iOS/Android) – used on the surface for pairing, real-time tracking, messaging, and syncing heatmaps
In the box:
- Descent™ S1 Buoy
- Carrying case
- Charging/data cable
- Tether
- Documentation
Want to learn more about how the Descent S1 can transform your dive experience?
👉 Read the full breakdown on our blog.
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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