THE BRAND GUIDEShearwater
Start with the screen. Then choose the capabilities.
30 catalogue entries · 12 researched profiles · 15 comparisons
The story behind the name.
Shearwater traces its beginnings to founder Bruce Partridge in 2004. Its background in dive computing makes the differences between display formats, supported modes and transmitter options more useful buying questions than a simple good–better–best ladder. Official source ↗
Read the range in two directions
Peregrine and Tern give shoppers a choice between a rectangular display and a compact round format. The TX versions add tank-pressure integration and a compass to those respective families. Teric belongs in the discussion when its additional capabilities match a defined requirement. Start by deciding which information you can read comfortably; then compare functions. A smaller computer is not automatically easier to use, and a larger one is not automatically too bulky.
Treat the transmitter as a separate purchase decision
Air integration means a compatible transmitter can send pressure information to a supported computer. It does not mean a transmitter is present in every retail box. Obtain an itemised quote showing the computer, transmitter model, any fitting work and the accessories supplied. If your current diving does not call for the extra capability, the standard models remain worth comparing.
Ownership before checkout
Ask a local dealer about warranty handling, battery service, compatible straps and charging accessories. Review the manual for the exact model and firmware. Buying a computer because you might one day pursue a particular course can make sense, but only after weighing the likelihood of that plan against the interface you will use on every dive today.
Product facts are sourced in the profiles below. Buying suggestions are our editorial interpretation, not findings from personal testing. Catalogue coverage is a researched selection, not a claim to contain every current product.
Products with a clearer picture.
Peregrine
A rectangular dive computer built around a 2.2-inch colour LCD and two-button controls. Air, nitrox, three-gas nitrox and gauge modes cover its core functions; vibration alerts and wireless charging keep the interface straightforward.
Specifications & review evidence →
Peregrine TX
The Peregrine TX combines a large rectangular colour display with wireless tank-pressure support and a tilt-compensated compass. It supports up to four optional transmitters and retains two-button operation, vibration alerts and wireless charging.
Specifications & review evidence →
Tern
A compact, round dive computer with a 1.3-inch AMOLED display and four-button operation. Its air, nitrox, three-gas nitrox, gauge and freediving modes sit alongside vibration alerts and a rechargeable battery. Quick-release straps include a shorter option.
Specifications & review evidence →
Tern TX
A compact AMOLED dive computer that adds wireless tank-pressure monitoring and a tilt-compensated compass to the Tern format. It accepts up to four transmitters and supports air, nitrox, three-gas nitrox, gauge and freediving modes.
Specifications & review evidence →
Teric
A watch-style dive computer with a sapphire window over its 1.39-inch AMOLED display. It combines wireless tank-pressure monitoring, a digital compass and audible or vibration alerts with recreational, trimix, closed-circuit bailout, gauge and freediving capabilities.
Specifications & review evidence →
Perdix 3
The Perdix 3 updates Shearwater’s rectangular computer with a 2.4-inch AMOLED display, titanium bezel and piezoelectric buttons. It supports up to four wireless pressure transmitters and vibration alerts. The larger screen is the most obvious reason to compare it directly with the Perdix 2 rather than treating both generations as the same product.
Specifications & review evidence →
Petrel 3
The Petrel 3 is a large rectangular computer with a 2.6-inch AMOLED screen, titanium bezel and replaceable AA battery. It supports vibration alerts and up to four wireless pressure transmitters. Its screen size makes it worth comparing with the smaller-display Perdix models when wrist readability is the main buying priority.
Specifications & review evidence →
Perdix 2
The Perdix 2 is a rectangular dive computer with a 2.2-inch colour display, titanium bezel and piezoelectric buttons. A user-replaceable AA battery, vibration alerts and support for four wireless pressure transmitters are its practical distinguishing features. This is the Perdix 2, not the original Perdix or the newer AMOLED Perdix 3.
Specifications & review evidence →
Teric - US Navy
Teric - US Navy is a specialist watch-format computer with a 1.39-inch AMOLED display, sapphire window and wireless charging. Shearwater identifies the Navy version as using the Thalmann decompression algorithm and Navy-specific modes. Its blackout and red-screen features are intended for that operational context.
Specifications & review evidence →
Petrel 3 Fischer
Petrel 3 Fischer combines a 2.6-inch AMOLED screen with a Fischer port for external oxygen-sensor monitoring. Shearwater lists monitoring of one to three cells, open-circuit and rebreather modes, vibration alerts and support for four optional wireless pressure transmitters. A replaceable AA battery supports field servicing.
Specifications & review evidence →
Perdix 2 - US Navy
Perdix 2 - US Navy is a specialist rectangular computer using Navy modes and Thalmann tables. It combines a 2.2-inch backlit colour display with wireless pressure monitoring, a field-replaceable AA battery and PIN-protected configuration. Its stealth functions include an anti-reflective display and blackout control.
Specifications & review evidence →
Petrel 3 Monitor (4-Pin)
Petrel 3 Monitor (4-Pin) is the analogue four-pin external-monitoring version of Shearwater’s large-screen computer. It reads oxygen sensors and offers a 2.6-inch AMOLED display, vibration alerts, a replaceable AA battery and four-transmitter pressure-monitoring capability. The manufacturer offers 18-inch and 30-inch cable configurations.
Specifications & review evidence →One decision. Two options.
Shearwater Peregrine TX vs Suunto Ocean All Black
Shearwater Peregrine TX vs Suunto Ocean All Black: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Peregrine TX vs Suunto EON CORE AQUA BLUE
Shearwater Peregrine TX vs Suunto EON CORE AQUA BLUE: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Peregrine TX vs TUSA Element III Dive Computer
Shearwater Peregrine TX vs TUSA Element III Dive Computer: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Tern TX vs Suunto Ocean All Black
Shearwater Tern TX vs Suunto Ocean All Black: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Tern TX vs Suunto EON CORE AQUA BLUE
Shearwater Tern TX vs Suunto EON CORE AQUA BLUE: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Tern TX vs TUSA Element III Dive Computer
Shearwater Tern TX vs TUSA Element III Dive Computer: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Peregrine vs Suunto Ocean All Black
Shearwater Peregrine vs Suunto Ocean All Black: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Peregrine vs Suunto EON CORE AQUA BLUE
Shearwater Peregrine vs Suunto EON CORE AQUA BLUE: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Peregrine vs TUSA Element III Dive Computer
Shearwater Peregrine vs TUSA Element III Dive Computer: our editorial scores, the practical differences and which one we would choose.
Read the comparison →Shearwater Peregrine vs Heinrichs Weikamp OSTC+
Compare Shearwater and Heinrichs Weikamp dive computer options: our scores, preferred pick, specifications and buying advice.
Read the comparison →Shearwater Tern TX vs Heinrichs Weikamp OSTC+
Compare Shearwater and Heinrichs Weikamp dive computer options: our scores, preferred pick, specifications and buying advice.
Read the comparison →Shearwater Peregrine TX vs Sherwood Scuba Wisdom 5
Compare Shearwater and Sherwood Scuba dive computer options: our scores, preferred pick, specifications and buying advice.
Read the comparison →Shearwater Peregrine vs Sherwood Scuba Wisdom 5
Compare Shearwater and Sherwood Scuba dive computer options: our scores, preferred pick, specifications and buying advice.
Read the comparison →Shearwater Tern TX vs Sherwood Scuba Wisdom 5
Compare Shearwater and Sherwood Scuba dive computer options: our scores, preferred pick, specifications and buying advice.
Read the comparison →Shearwater Peregrine TX vs Heinrichs Weikamp OSTC+
Compare Shearwater and Heinrichs Weikamp dive computer options: our scores, preferred pick, specifications and buying advice.
Read the comparison →Buying guides.
Is It Worth Upgrading Your Dive Computer?
A clearer screen, air integration or a smaller watch: work out what an upgrade would change and what the complete package will cost.
Read the guide →Buying Scuba Gear in Australia: A Practical Checklist
Buying your first kit or upgrading one piece? Here’s how to compare the full cost, check local support and choose equipment for the trips you actually have planned.
Read the guide →Explore the Shearwater catalogue.
Each entry has its own page. Detailed research and independent review evidence are shown where available; a listing alone is not a recommendation.
- Swift Transmitter
- Tern
- Teric
- NERD 2
- Tern TX
- Perdix 3
- Petrel 3
- Perdix 2
- Hydrotank
- SWIFT GPS
- Peregrine
- Peregrine TX
- NERD 2 Fischer
- Teric - US Navy
- Perdix 2 Low-Mag
- Petrel 3 Fischer
- DCIEM Unlock Code
- Jetpack Float Pad
- Peregrine Console
- Perdix 2 - US Navy
- Shearwater Jetpack
- Peregrine TX Console
- NERD 2 Charging Clip
- Avelo Mode Unlock Code
- NERD 2 Monitor (4-Pin)
- Petrel 3 Monitor (4-Pin)
- Surface Marker Buoy (SMB)
- Fitting Elbow Quick-Disconnect
- NERD 2 DiveCAN Monitor (5-Pin)
- Remora Band Extra Long - Tail Only - Black
