Garmin Descent Mk2i, Watch-Style Dive Computer with Air

Product Overview

The Garmin Descent Mk2i is a watch-style dive computer engineered for serious divers who demand precision, reliability, and advanced functionality both underwater and on land. Designed with a rugged titanium build and a 1.4” sunlight-readable color display—36% larger than its predecessor—it delivers critical dive data with clarity and durability. Ideal for recreational divers, technical divers, and instructors, the Mk2i supports integrated tank pressure monitoring for up to five tanks when paired with the Descent T1 transmitter (sold separately), enabling real-time air management across dive groups. Beyond diving, it transitions seamlessly into a premium multisport GPS smartwatch, offering advanced training metrics, health monitoring, and everyday smart features.

Key Features

• Integrated Tank Pressure Monitoring: When paired with the Descent T1 transmitter (sold separately), the Mk2i uses SubWave sonar technology to monitor tank pressure for up to five divers within a 10-meter range. View remaining air time, air consumption rate, and tank status for yourself and your dive group directly on your wrist—ideal for instructors and team dives.
• Six Dive Modes & ABC Sensors: Choose from six specialized dive modes to match your activity, supported by an underwater 3-axis compass, altimeter, barometer, and thermometer. Navigate confidently underwater with precise directional guidance and environmental tracking.
• Surface GPS & Dive Logging: Mark entry and exit points using surface GPS (note: GPS does not function underwater). Store up to 200 dives on the device and review or share them via the Garmin Dive app on your paired smartphone.
• Multisport Smartwatch Capabilities: On land, the Descent Mk2i functions as a full-featured GPS smartwatch with multi-GNSS support for accurate positioning. Track running, cycling, swimming, and more with dedicated sports apps and advanced training analytics.
• Health & Performance Monitoring: Features wrist-based heart rate estimation and Pulse Ox sensing (not a medical device) to monitor blood oxygen saturation. Use this data to assess sleep quality and acclimatization at high altitudes.
• Smart Connectivity & Lifestyle Features: Receive smart notifications for calls, texts, and calendar alerts when connected to a compatible smartphone. Store music locally and stream via premium services (subscription may be required), pay on the go with Garmin Pay (availability varies by region), and enjoy up to 16 days of battery life in smartwatch mode.

Technical Specifications

• Display: 1.4” color sunlight-readable (36% larger than previous model)
• Battery Life: Up to 80 hours in dive mode, 16 days in smartwatch mode, 15 hours in GPS mode with music
• Materials: Titanium case with black band
• Dive Modes: Six available
• Sensors: ABC sensors (altimeter, barometer, compass), underwater 3-axis compass, Pulse Ox, wrist-based heart rate
• Connectivity: SubWave sonar (for T1 transmitter pairing), Bluetooth, ANT+, Wi-Fi
• Compatibility: Pairs with Descent T1 transmitter (sold separately) for air integration
• Smart Features: Garmin Pay, music storage, smart notifications, multi-GNSS support
• Dive Log Capacity: Up to 200 dives stored on device
• Range for Air Integration: Up to 10 meters from paired transmitters

Benefits & Use Cases

The Garmin Descent Mk2i is built for divers who need reliable, real-time data without compromising on style or surface functionality. Technical divers and instructors benefit from air integration across multiple tanks, allowing them to monitor team air supply and consumption rates during complex dives. Recreational divers gain peace of mind with accurate depth tracking, dive time monitoring, and navigation tools like the underwater compass. The surface GPS ensures accurate logging of dive sites, while the 200-dive memory and Garmin Dive app integration make it easy to track progress and share experiences. On land, athletes and outdoor enthusiasts use it as a high-performance multisport watch for training, navigation, and health tracking—whether hiking at altitude, running trails, or swimming in open water. Its titanium construction ensures durability in harsh environments, while smart features like music storage and contactless payments add everyday convenience.

Important Notes

The Descent T1 transmitter required for air integration is sold separately and must be paired with the Mk2i to enable tank pressure monitoring. SubWave sonar communication has a maximum range of 10 meters. GPS functionality is available on the surface only and does not operate underwater. Pulse Ox and heart rate sensors are for fitness and wellness tracking and are not intended for medical diagnosis or treatment. Garmin Pay availability depends on region and supported payment networks. Music streaming may require a subscription to a compatible service. Always ensure your smartphone is compatible for full smart notification and app functionality.