Wearable4U Garmin Descent Mk3 & Mk3i 51 mm & 43 mm w/T2

Product Overview

The Garmin Descent Mk3i is a high-performance, watch-style dive computer engineered for serious divers who demand precision, durability, and advanced functionality. Built with a 51 mm titanium case and scratch-resistant sapphire lens, it combines rugged dive-ready construction with smartwatch versatility for life above water. Designed specifically for recreational and technical divers, this device supports multiple dive modes, including scuba and freediving, while integrating SubWave sonar technology for real-time diver communication. Whether you’re exploring deep reefs or tracking fitness on dry land, the Descent Mk3i delivers reliable performance with up to 25 days of battery life in smartwatch mode. This bundle includes the Descent T2 transceiver, enabling tank pressure monitoring and group dive coordination for up to eight divers.

Key Features

• 1.4” AMOLED Display with Sapphire Lens – Crisp, vibrant visuals with excellent sunlight readability and long-term durability against scratches and impacts.
• 200-Meter Dive-Rated Titanium Case – Engineered to withstand extreme underwater pressure with a lightweight, corrosion-resistant titanium build and leakproof inductive metal buttons.
• SubWave Sonar Technology – Enables diver-to-diver communication via preset messages up to 30 meters (requires software v15.70 or later) and supports monitoring of tank pressure and depth for up to eight divers when paired with the included T2 transceiver.
• Built-In LED Flashlight – Offers red and white light options with variable intensities and strobe modes for enhanced visibility in dark or low-light environments, both above and below the surface.
• Dive Readiness Tool – Analyzes lifestyle factors like sleep, stress, exercise, and jet lag to estimate your body’s preparedness for diving, helping you make safer, more informed dive planning decisions.
• DiveView Mapping – Features bathymetric depth contours and access to over 4,000 global dive sites to assist with navigation, site selection, and underwater orientation.
• Multi-Band GPS & ABC Sensors – Delivers precise positioning on the surface and includes an underwater compass, barometer, and altimeter to support full dive navigation from entry to exit (GPS does not function underwater).
• 200-Dive Log Capacity – Stores detailed dive data directly on the device and allows easy sharing and review through the Garmin Dive app on a compatible smartphone.
• Smartwatch Functionality – Includes Garmin Pay, music storage, smart notifications, and built-in sports apps to support fitness tracking and daily connectivity when not diving.

Technical Specifications

• Model: Garmin Descent Mk3i (51 mm)
• Display: 1.4” AMOLED, scratch-resistant sapphire lens
• Case Material: Carbon Gray DLC Titanium
• Band Options: DLC Titanium Band, black silicone band, extra long adjustment strap
• Dive Rating: 200 meters
• Battery Life: Up to 25 days in smartwatch mode
• Connectivity: SubWave sonar, Bluetooth, ANT+
• Included Accessories: Descent T2 transceiver, USB-C to clip, charging/data cable, Wearable4U Power Bank, USB C-type adapter
• Software Requirement: SubWave messaging requires software version 15.70 or later
• Compatibility: Works with Garmin Dive app on compatible smartphones

Benefits & Use Cases

The Descent Mk3i is ideal for divers who want a single device that excels both underwater and on land. Its titanium construction ensures long-term resilience in saltwater environments, while the AMOLED display provides clear readability in bright or low-light conditions. Divers can use the T2 transceiver to monitor team safety during group dives, receiving real-time data on tank levels and depth for up to eight connected divers within a 10-meter range. The integrated flashlight enhances safety during night dives or cave exploration, offering both red light for night vision preservation and white light for general illumination. On the surface, the dive readiness feature helps users assess their physical condition before entering the water, promoting safer diving practices. For travel, the preloaded DiveView maps simplify finding and navigating to popular dive locations worldwide. When not diving, the watch supports everyday activities with fitness tracking, contactless payments, and smartphone notifications.

Important Notes

This product includes the Descent T2 transceiver, which must be worn by each diver in the group to enable tank pressure and depth monitoring. SubWave messaging functionality requires a software update to version 15.70 or later. GPS tracking is not available underwater and is intended for surface navigation only. The dive readiness tool provides estimated metrics based on tracked data and should be used as a guide, not a medical assessment. Compatible smartphone required for app connectivity and smart features. Care should be taken to rinse the device with fresh water after exposure to saltwater or chlorine to maintain performance and longevity.