Dive computers have taken a "Tern" for the better! The Tern TX is air integrated, easy to use and perfect for travel. Shearwater computers are not only made in Canada, they are made for serious recreational and technical scuba divers enjoying cold and warm water scuba diving. The latest member of the Shearwater family is the Tern TX. The Tern TX has air-integrated capability with the Shearwater Swift transmitter (not included). The Tern TX has a brilliant screen and compact design, making it wearable for surface days as well as scuba diving days. Shearwater is known for making dive computers that are intuitive and easy to use. Dive Modes: Air or Nitrox to 99% 3-Gas Nitrox Gauge - Bottom timer with stop watch & dive logging Freedive - Configurable sampling rates and alarms Basic Functions & Features:Style: Small, wrist watch-styleUser Interface: 4 buttonDive Log: 500 hoursDepth Rating: 394 ft (120 m)Battery: Rechargeable Li-ionAir Integration: Yes, with Swift (not included)Nitrox compatible: YesDownloadable: Yes, bluetoothAlarms: Visual, vibrationAscent Rate Indicator: YesAutomatic Altitude Adjustment: YesDisplay: Full color AMOLED, 1.3"Lens Type: Toughened glassDigital Compass: Yes *Discounts/Promos do not apply to Shearwater product