Garmin Descent T2 Transceiver (010-13308-00)

Introduction

The Garmin Descent T2 Transceiver adds vital diver-to-diver communication and real-time tank monitoring to your air-integrated Descent dive computer. By pairing this compact transceiver with your Descent computer, you gain a unified wrist-based cockpit for every breath, every tank, and every buddy. The enhanced SubWave sonar network lets you track up to 8 tanks underwater, displaying tank pressure, depth, gas use rate, and time remaining for diverse diving scenarios. You can also exchange preformatted messages with networked buddies wearing Descent Mk3i computers, giving your team a shared situational awareness that extends beyond visual contact. This is depth- and duty-cycle-aware gear built to help you dive with confidence.

With a lightweight, purpose-built design and straightforward pairing, the Descent T2 keeps essential data flowing to your wrist where you need it most.

Key capabilities include monitoring up to 8 tanks, real‑time tank data, and networked messaging—all designed to streamline group management on demanding dives.

Key Features

• Monitors up to 8 tanks simultaneously while underwater, including pressure, depth, use rate, and time remaining. (8-tank capability)
• Deep-dive rated to 20 ATM (200 meters) for extended exploration in challenging environments.
• Wireless surface transmission up to 10 meters via ANT/Bluetooth; underwater SubWave data transmission for pressure and depth up to 10 meters.
• Group networking supports up to 8 transceivers in a single dive group within 10 meters of each paired computer.
• Diver-to-diver messaging supports preformatted messages up to 30 meters away (with compatible Descent Mk3i wound into the network).
• Easy Tank ID via wireless area networking to identify buddy tanks quickly—no manual setup required on the go.
• In-the-box contents include 1 Descent T2 transceiver, 1 air spool, and 1 documentation pack, ready to pair with your system.

Data Insights

In practical field conditions, the T2 delivers up to 100 hours of battery life on a single CR123A battery, ensuring long dives can be tracked without mid-mission swaps. The networked framework—combining SubWave underwater data with surface ANT/Bluetooth links—provides a consistent data stream for up to 8 tanks, helping divers optimize gas usage and bottom time. Real-world testing also confirms reliable up-to-30-meter messaging ranges among networked Descent Mk3i wearers, enhancing team coordination even when line-of-sight is limited.

Usage Instructions

To get the most from the Descent T2, pair the transceiver with your compatible air-integrated Descent dive computer, ensuring all devices are within the supported 10-meter network range. Use the simplified wireless pairing to identify buddy tanks and enable SubWave data sharing, then monitor live tank pressures, depth, and gas usage on your wrist. For messages, deploy the preformatted diver-to-diver messages with networked buddies up to 30 meters away. Regularly verify connections before and during dives to maintain uninterrupted data flow.

Design & Material

The Descent T2 transceiver is engineered for rugged underwater use, with a compact profile designed to fit alongside standard dive rig components. Its streamlined housing and precise threading ensure secure attachment to compatible air-spaced assemblies while resisting saltwater corrosion and daily wear. The device is built around reliable 3 V CR123A lithium power and a robust underwater communication suite, providing durable performance in harsh environments.

• Dimensions: 84.50 x 36.52 x 36.52 mm for a compact, unobtrusive fit on the harness.
• Thread size: 7/16 in. (20 UNF) for secure mounting to standard housings.
• Battery: 3 V CR123A lithium, with up to 100 hours of life under typical use.
• Wireless frequency: 2.4 GHz, up to 5.22 dBm maximum output for dependable short-range communication.
• Water rating: 20 ATM (200 meters) for deep, demanding dives.
• Underwater data range: SubWave data transmission for pressure and depth signals up to 10 meters.

Final Verdict

For divers who demand precise, real-time insight into gas planning and buddy coordination, the Garmin Descent T2 Transceiver is a decisive upgrade. It centralizes tank data, depth, and air usage while enabling structured, preformatted diver-to-diver messages—delivering unmatched group situational awareness on every dive. If you routinely dive with a buddy or in small teams, this transceiver helps you monitor multiple tanks at a glance, extend bottom time safely, and stay connected even when visibility or proximity is limited. Add the Descent T2 to your kit and transform how you dive—with clearer data, better communication, and increased confidence on every descent.