SubWave™ air integration and buddy awareness—tank data on your wrist.

Pair the Garmin Descent T2 Transceiver with compatible Descent computers to view live tank pressure, air time remaining, and consumption rate—plus monitor up to eight transmitters in range. With SubWave™ sonar networking, Mk3i users can even exchange preformatted diver-to-diver messages underwater for added situational awareness.

Key Benefits

• Real-time tank intelligence See pressure, gas time remaining, and consumption on your compatible Descent—no hose glance needed.
• Group visibility Pair up to eight T2s so leaders can keep tabs on buddies’ tank pressures and depths within range.
• Underwater messaging With Mk3i, exchange pre-set messages to coordinate descents, turn pressures, or aborts.
• Robust & serviceable 200 m dive rating, 300 bar pressure rating, and a user-replaceable CR123A battery for about 100 hours of diving.
• Simple setup Standard 7/16? UNF thread and quick wireless pairing streamline installation and tank ID.

Key Specifications

• Compatibility Pairs with air-integrated Descent computers (e.g., Mk3i) for SubWave™ features
• Max transmitters Monitor up to 8 tanks per compatible computer
• Surface transmission Up to ~10 m / 33 ft (ANT)
• Underwater transmission Tank-pressure data up to ~10 m / 33 ft; diver-to-diver messaging up to ~30 m / 98 ft (with Mk3i)
• Depth rating 200 m (20 ATM)
• Pressure rating 300 bar / 4351 psi
• Battery User-replaceable CR123A; up to ~100 hours of dive time
• Thread 7/16?-20 UNF (standard HP port)
• Operating temp ?20 to 60 °C (?4 to 140 °F); underwater 0 to 40 °C (32 to 104 °F)
• Dimensions ~84.5 × 36.5 × 36.5 mm (3.33 × 1.44 × 1.44 in)
• Warranty (U.S.) One-year limited warranty covering defects in materials/workmanship; Garmin will repair or replace at its discretion. Cosmetic damage, misuse/accidents, unauthorized repair/mods, and consumables are excluded. Customer typically covers shipping; service replacements carry the longer of 90 days or the remainder of the original term.

Why this model? T2 brings precise tank data and team awareness into one streamlined setup—ideal for instructors, guides, and teams who want cleaner hose routing and safer, coordinated dives.