Garmin Descent MK3 Computers

~~$1799.99~~ $1549.99

Part Number:010-02752-13 Manufacturer: Garmin COLOR:

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Garmin Descent Mk3i 51mm - Ultimate Dive Computer with SubWave Sonar

Product Overview

The Garmin Descent Mk3i 51mm represents the pinnacle of dive computer technology. As Garmin's most advanced dive watch, the Mk3i introduces groundbreaking SubWave™ sonar technology that enables underwater communication between divers up to 30 meters away—a true game-changer for dive safety and coordination.

With its brilliant 1.4" AMOLED display, premium titanium construction, comprehensive dive modes, and full smartwatch capabilities, the Descent Mk3i 51mm is the ultimate tool for serious divers who demand the absolute best in performance, safety, and style.

Why Choose the Garmin Descent Mk3i 51mm?

SubWave™ Sonar Communication: Send and receive messages underwater to other Mk3i users up to 30 meters away

Stunning AMOLED Display: Brilliant 1.4" color touchscreen with exceptional clarity underwater and in bright sunlight

Premium Construction: Titanium case with sapphire lens and titanium or DLC titanium bezel options

Advanced Dive Computer: Multiple dive modes including air, nitrox, trimix, CCR, gauge, and apnea

Multi-Gas Support: Manage up to 8 gas mixes for complex technical dives

Built-In LED Flashlight: Integrated white and red LED for night diving and emergencies

Superior Battery Life: Up to 48 hours in dive mode, 31 days in smartwatch mode

Comprehensive Health & Fitness: Advanced training metrics, health monitoring, and 60+ sport modes

Full Smartwatch Features: Music storage, Garmin Pay, notifications, and navigation

Revolutionary SubWave™ Sonar Technology

The Descent Mk3i's SubWave™ sonar communication is a breakthrough innovation that transforms dive safety and buddy coordination:

How SubWave Works

Underwater Messaging: Send and receive preset and custom messages to dive buddies wearing Mk3i devices

30-Meter Range: Communicate up to 30 meters (98 feet) away underwater

Dive Data Sharing: View your buddy's depth, tank pressure (with compatible transmitter), and location

Group Diving: Connect with multiple divers simultaneously for enhanced group coordination

Emergency Alerts: Send distress signals and location information to nearby divers

No Line of Sight Required: Sonar works around obstacles, unlike traditional dive lights signals

Real-World Benefits

Enhanced Safety: Immediately alert buddies to problems or changes in dive plan

Better Coordination: Coordinate dive activities, photo opportunities, and navigation decisions

Reduced Stress: No more guessing what your buddy is trying to communicate

Professional Applications: Ideal for dive instructors, guides, technical divers, and rescue teams

Peace of Mind: Parents can communicate with junior divers, instructors with students

Key Features & Specifications

Dive Computer Capabilities

Dive Modes:

Single and multi-gas diving (up to 8 gases)

Air, nitrox (21-100% O2), and trimix support

Closed-circuit rebreather (CCR) mode

Gauge mode

Apnea and apnea hunt modes

Sidemount and backmount configurations

Advanced Dive Metrics:

Real-time depth, time, and temperature

No-decompression limits (NDL) and decompression stops

Ascent/descent rate with alerts

Safety stop countdown timer

Gas time remaining (GTR) calculations

Tissue loading and saturation graphs

Surface interval and repetitive dive tracking

Dive log with automatic cloud sync

PO2 and gas density monitoring

Air Integration:

Wireless tank pressure monitoring (Descent T2 transmitter sold separately)

Gas time remaining (GTR) based on consumption rate

Support for up to 5 transmitters simultaneously

Low tank pressure alerts

Air consumption rate tracking

Safety & Alerts:

Audible tones and vibration alerts

Missed decompression warnings

Fast ascent alarms

High/low PO2 alerts

CNS oxygen toxicity tracking

Customizable conservatism settings (Bühlmann ZHL-16c algorithm)

Display & Interface

AMOLED Touchscreen:

1.4" (35.4 mm) brilliant AMOLED display

454 x 454 pixel resolution

Always-on mode available

Exceptional underwater visibility

Responsive touchscreen with button controls

Customizable dive screens and data fields

Built-In LED Flashlight:

White LED for general illumination

Red LED for night vision preservation

Adjustable brightness levels

Variable and strobe modes

Emergency signaling capability

Premium Construction & Design

Materials:

Grade 5 titanium case (51mm)

Scratch-resistant sapphire lens with anti-reflective coating

Titanium or DLC (diamond-like carbon) titanium bezel options

Corrosion-resistant construction

10 ATM water resistance (100 meters surface)

Comfort & Fit:

51mm case diameter (also available in 43mm)

QuickFit® 26mm band system

Multiple band options: titanium, silicone, nylon

96 grams with titanium band

Ergonomic design for extended wear

GPS & Navigation

Multi-GNSS Support:

GPS, GLONASS, and Galileo satellite systems

Surface GPS for dive site marking

Entry/exit point navigation

TracBack routing to starting point

Worldwide basemap preloaded

ABC Sensors:

Altimeter for elevation tracking

Barometer for weather monitoring

3-axis electronic compass

Storm alerts

Smartwatch & Fitness Features

Health Monitoring:

Wrist-based heart rate (Elevate™ V5 sensor)

Pulse Ox blood oxygen saturation

Sleep tracking with sleep score and insights

Stress tracking and relaxation reminders

Body Battery™ energy monitoring

Respiration rate tracking

Women's health tracking

Health Snapshot™ feature

Training & Performance:

60+ preloaded sports apps

Advanced running dynamics

VO2 max and training status

Training readiness and recovery time

PacePro™ pacing strategies

ClimbPro™ ascent planner

Swimming metrics (pool and open water)

Cycling power and performance metrics

Ski/snowboard tracking

Golf courses (43,000+ preloaded)

Smart Features:

Music storage (up to 2,000 songs)

Spotify, Amazon Music, and Deezer support

Garmin Pay™ contactless payments

Smart notifications (calls, texts, emails, apps)

Safety and tracking features (incident detection, assistance)

Connect IQ™ store (watch faces, apps, data fields)

Weather forecasts and alerts

Calendar, alarm, and timer functions

Battery Performance

Impressive Battery Life:

Smartwatch mode: Up to 31 days

Battery saver mode: Up to 90 days

Dive mode: Up to 48 hours

Dive mode with SubWave: Up to 40 hours

GPS mode: Up to 92 hours

GPS with music: Up to 14 hours

Expedition GPS mode: Up to 64 days

Power Management:

Solar charging capability (select models)

USB charging

Power manager for custom battery profiles

Battery percentage display

Connectivity & Compatibility

Wireless Connectivity:

Bluetooth®, ANT+®, Wi-Fi®

SubWave™ sonar communication

Smartphone pairing (iOS and Android)

Garmin Dive™ app integration

Garmin Connect™ app sync

Garmin Explore™ app for maps

Transmitter Compatibility:

Garmin Descent T2 transmitters

Support for up to 5 transmitters

Real-time tank pressure monitoring

Wireless firmware updates

Who Should Buy the Garmin Descent Mk3i 51mm?

The Descent Mk3i 51mm is the ultimate choice for:

Technical Divers: Advanced features, 8-gas support, CCR mode, and comprehensive decompression algorithms

Dive Professionals: Instructors, divemasters, and guides benefit from SubWave communication with students

Safety-Conscious Divers: SubWave technology provides unprecedented underwater communication and emergency capabilities

Serious Recreational Divers: Premium features and build quality for divers who want the absolute best

Multi-Sport Athletes: Comprehensive training and fitness features beyond diving

Gear Enthusiasts: Cutting-edge technology and premium materials

Night Divers: Built-in LED flashlight eliminates need for separate dive light

Travel Divers: GPS navigation, worldwide maps, and robust construction for global adventures

Garmin Descent Mk3i vs. Other Models

Mk3i 51mm vs. Mk3i 43mm

51mm Advantage: Larger display, longer battery life, more visible underwater

43mm Advantage: Smaller, lighter, better for smaller wrists

Best For 51mm: Divers who prioritize display size and battery performance

Mk3i vs. Descent G2

Mk3i Advantage: SubWave communication, AMOLED display, LED flashlight, air integration, premium materials, 8-gas support

G2 Advantage: More affordable, lighter weight, excellent battery life

Best For Mk3i: Technical divers, professionals, and those who want the ultimate dive computer

Mk3i vs. Shearwater Perdix AI

Mk3i Advantage: SubWave communication, smartwatch features, GPS, fitness tracking, LED flashlight

Perdix AI Advantage: Dive-focused interface, proven in technical community

Best For Mk3i: Divers who want all-in-one device for diving and daily life

Mk3i vs. Suunto EON Steel

Mk3i Advantage: SubWave communication, superior smartwatch features, better battery, LED flashlight, more sport modes

Best For Mk3i: Tech-savvy divers seeking innovation and versatility

Why Buy from Divers Cove?

When you invest in the Garmin Descent Mk3i 51mm at Divers Cove, you receive exceptional value beyond the product:

Expert Guidance & Setup

37 Years of Experience: Family-owned dive center serving South Florida since 1988

PADI 5-Star IDC Training Center: Highest level of PADI recognition

Knowledgeable Staff: Our team dives what we sell and provides expert advice

Professional Configuration: We'll set up your Mk3i for your specific diving style and needs

SubWave Training: Learn to maximize the revolutionary communication features

Transmitter Pairing: We'll pair and configure your Descent T2 transmitters

Lifetime Support: Questions months or years later? We're always here to help

Comprehensive Service

In-Store Fitting: Try the 51mm and 43mm sizes to find your perfect fit

Band Selection: Choose from titanium, silicone, and nylon options

Software Updates: We'll ensure your device has the latest features and algorithms

Warranty Support: Full manufacturer warranty with local service coordination

Trade-In Program: Upgrade your old dive computer and save 20% on new gear

Accessory Bundle Deals: Save when you add Descent T2 transmitters and bands

Local Convenience & Community

In-Stock Availability: See and purchase today at our Davie, FL location

No Shipping Wait: Walk out with your Mk3i the same day

Easy Returns: Local support if you need assistance or exchanges

Dive Trip Integration: Use your new Mk3i on our local and international dive trips

Community Connection: Join other Mk3i users in our active diving community

Ongoing Education: Advanced dive computer workshops and technical diving courses

Frequently Asked Questions

Q: What is SubWave and how does it work?A: SubWave is Garmin's proprietary sonar technology that allows Descent Mk3i users to send and receive messages underwater up to 30 meters away. It uses sonar signals (not radio or Bluetooth) to communicate through water, enabling buddy coordination, data sharing, and emergency alerts.

Q: Do I need another Mk3i to use SubWave?A: Yes, SubWave communication requires both divers to have a Descent Mk3i (43mm or 51mm). However, all other dive computer features work independently.

Q: Is the 51mm too large for my wrist?A: The 51mm is designed for standard to larger wrists. We recommend trying both the 51mm and 43mm in-store. The 51mm offers a larger display and longer battery life, while the 43mm is more compact. Both have identical features.

Q: Can I use this for technical diving?A: Absolutely! The Mk3i supports up to 8 gas mixes, trimix, CCR mode, sidemount/backmount configurations, and uses the proven Bühlmann ZHL-16c decompression algorithm with customizable gradient factors.

Q: How do I monitor tank pressure?A: You'll need Garmin Descent T2 transmitters (sold separately), which wirelessly send tank pressure data to your Mk3i. The watch supports up to 5 transmitters simultaneously for sidemount or team diving.

Q: Is the AMOLED display visible underwater?A: Yes! The AMOLED display is exceptionally bright and clear underwater, even in bright sunlight or murky conditions. You can also adjust brightness levels.

Q: How does the LED flashlight work?A: The Mk3i has integrated white and red LEDs built into the case. Activate them via the watch interface for navigation, equipment checks, or signaling. The red LED preserves night vision.

Q: Can I use this as my everyday watch?A: Definitely! The Mk3i is a full-featured smartwatch with music storage, Garmin Pay, notifications, fitness tracking, and premium styling suitable for any occasion.

Q: What's the battery life for a dive trip?A: With 48 hours in dive mode, you'll have plenty of power for a week-long dive trip with 2-4 dives per day. Smartwatch mode lasts up to 31 days between charges.

Q: Does it sync dive logs automatically?A: Yes, the Mk3i automatically syncs your dive logs to the Garmin Dive app via Bluetooth or Wi-Fi. You can review, analyze, and share your dives from your smartphone.

Pricing & Availability

Available Configurations

Titanium case with titanium bezel and titanium band

Titanium case with DLC titanium bezel and silicone band

Additional band options available

Recommended Accessories

Garmin Descent T2 Transmitters: Wireless tank pressure monitoring (sold separately)

Additional Bands: Titanium, silicone, nylon options for different activities

Screen Protectors: Keep your sapphire lens pristine

Financing Options Available

Ask about flexible payment plans to make your investment easier.

Bundle & Save

Combine your Mk3i with transmitters, additional bands, or other gear and save! .

Ready to Experience the Future of Diving?

The Garmin Descent Mk3i 51mm isn't just a dive computer—it's a revolutionary tool that transforms how divers communicate, navigate, and experience the underwater world. With SubWave sonar communication, stunning AMOLED display, premium titanium construction, and comprehensive dive capabilities, the Mk3i represents the absolute pinnacle of dive technology.

Whether you're a technical diver pushing limits, a professional guiding students, or a passionate recreational diver who demands the best, the Descent Mk3i 51mm delivers unmatched performance, safety, and innovation.

Visit Divers Cove Today

Divers Cove2335 S. University DriveDavie, FL 33324

Hours:Mon-Fri: 10am-6pmSat: 9am-5:30pmSun: 10am-4pm

Contact: (954) 473-1220 info@diverscovefl.com www.diverscovefl.com

Come see the Mk3i in person, try both sizes, and let our expert team help you choose the perfect configuration for your diving adventures.

About Divers Cove

Since 1988, Divers Cove has been South Florida's premier family-owned dive center. As a PADI 5-Star IDC Training Center, we offer the smallest class sizes (max 4-6 students), expert instruction, and a perfect 37-year safety record. We serve divers throughout Broward County, including Davie, Fort Lauderdale, Hollywood, Pembroke Pines, Miami, Boca Raton, and Palm Beach County.

From beginner Open Water certification to advanced technical training, equipment sales, service, rentals, and dive trips—we're your complete diving resource. Our passionate team dives what we teach and sells only gear we trust.

Join the Divers Cove family and experience the difference that 37 years of expertise makes.