Garmin Descent T2 Transceiver with Enhanced SubWave Sonar Technology and 20 ATM Dive RatingEvery breath, every tank, every buddy on your dive, track them all on your wrist when you pair the Garmin Descent T2 Transceiver with your compatible air integrated Descent dive computer. Enhanced SubWave sonar technology lets you monitor up to 8 tanks when underwater viewing air pressure, depth, use rate, and time remaining for multiple types of diving. Plus, you can even communicate via preformatted messages (coming soon) with other networked