Shearwater Tern Tx With Swift TransmitterComes with Shearwater Swift Transmitter The Tern TX feature a 1. 3 AMOLED screen with clear visibility in various lighting conditions. Their watch style design and high resolution display ensure easy access to vital diving data. The Tern TX stands out with its ability to connect to up to four Swift transmitters and includes a digital compass. Both models support Air, Nitrox, 3 Gas Nitrox, Gauge, and Freedive modes. Designed and Built in Canada and