The Shearwater Terndive computer is a powerful, simple, reliable, and compact watch-type computer designed with the sport diver in mind.

The Tern builds upon the success of the popular Shearwater Peregrine dive computer with an appearance similar to, yet lighter and thinner than, the Shearwater Teric.

The difference between the Tern and theShearwater Tern TX isn’t just the silver bezel and button colour (as opposed to the TX’s black), but that the Tern (non-TX) isn’t transmitter-capable, nor does it have a digital compass.

Neither Tern models have OC “mixed gas” technical and CCR modes as do the Shearwater Perdix 2, Teric and Petrel 3. However, both support Air, Nitrox, 3-Gas Nitrox, Gauge and Freedive modes with 500 hours of log time, which is plenty for a majority of divers.

The Tern & Tern TX are each depth-rated to 120 metres and tested to engineering EN standards for dive computer compliance.

Shearwater Tern AMOLED screen

With a watch-style form factor, the 1.3 diameter AMOLED screen (Active Matrix Organic Light Emitting Diode technology) provides crystal-clear visibility in various lighting conditions, making it easier than ever for divers to keep track of their crucial information.

Shearwaters high-resolution display features a vibrant, best-in-class interface that gives divers quick access to essential data, promoting safer and more enjoyable dives.

Shearwater TERN Dive Computer Specifications

• Compact, stylish and lightweight, thinner than the Teric
• Supports Air, Nitrox, 3 Gas Nitrox, Gauge, and Freedive modes
• Has abattery life with dive mode onfor 20 hours
• It is charged wirelessly via a cradle and supports quick charge
• HasBluetooth
• Hashaptic alarms
• Has a vibrant, clear 1.3 AMOLED colour screen & toughened glass
• Is depth rated to 120m
• Has a 500 hour dive log
• Is available with the new Shearwater Remora quick-connect straps

The Tern is an affordable option for anyone seeking
a compact sport diving computer.”
Jason Leggatt, CEO of Shearwater Research Inc.

ShearwaterWatch Computers Compared

FEATURES TERN TERN TX TERIC SCREEN SIZE 1.3″ AMOLED 1.3″ AMOLED 1.39″ AMOLED TRANSMITTERS SUPPORTED None 4 4 LENS Toughened Glass Toughened Glass Sapphire BATTERY Wireless Rechargeable Li-Ion Wireless Rechargeable Li-Ion Wireless Rechargeable Li-Ion BLUETOOTH Yes Yes Yes BATTERY DIVE TIME 20 hours 20 hours 30 hours DIGITAL COMPASS No Yes Yes DEPTH RATING 120m 120m 200m NUMBER OF GASES 3 OC 3 OC 5 OC / 5 CC MODES Air, Nitrox, 3-Gas Nitrox, Gauge, Freedive Air, Nitrox, 3-Gas Nitrox, Gauge, Freedive OC REC, OC TEC, CC/BO, Gauge, Freedive DIVE LOG HOURS 500 500 500 WEIGHT 100g 100g 119g ALARMS Vibration Vibration Vibration / Audio