Technical dive computers
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Technical & trimix dive computers

Big-screen, multi-gas and rebreather-ready computers built for decompression, trimix and CCR diving.

Technical computers add what recreational units leave out: open-circuit trimix, multiple gas switches, constant-PO₂ rebreather modes and the large, unambiguous displays that serious decompression diving demands.

These are tools for trained technical divers. Get the appropriate certification before diving mixed gas, staged decompression or a rebreather. See the buying guide for how modes and algorithms differ.

TechnicalShearwater Petrel 3

Shearwater Petrel 3

A large-screen, AA-battery technical computer with full trimix and rebreather modes — a workhorse for serious decompression diving.

AA batteryTrimixRebreather
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TechnicalShearwater Perdix 2

Shearwater Perdix 2

The do-everything tech flagship: open-circuit trimix, CCR, gauge and recreational modes on one big, rugged display.

TrimixCCR readyAir integration
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TechnicalShearwater Tern TX

Shearwater Tern TX

A more compact, lighter-weight technical AMOLED computer with air integration — much of the Perdix capability in a smaller body.

AMOLEDTrimixAir integration
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TechnicalShearwater Teric

Shearwater Teric

Watch-format technical computer with trimix and rebreather support, haptic alerts and a daily-wear design.

AMOLEDTrimix / CCRHaptics
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TechnicalSuunto EON Core

Suunto EON Core

A full-colour technical computer with customisable displays, gas switching and wireless tank pressure via Tank POD.

ColourGas switchingTank POD
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A dive computer is life-support equipment

The reviews and guides here are editorial information to help you compare models — they are not dive training or a substitute for proper certification. Always dive within the limits of your training, follow your computer's ascent rate and stops, and get formal instruction before technical, nitrox, trimix or rebreather diving.

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