Seac Dive Computer

SEAC Dive Computers — Italian-Engineered, Accessible Performance

SEAC introduced the first Italian dive computer watch in 1987 — a milestone in dive safety history. That early commitment to making dive computing accessible has continued across the decades: SEAC dive computers consistently offer feature-rich, reliable performance at prices that make professional-grade functionality available to a broad range of divers, from new students through regular recreational divers.

At DiveCatalog.com, we carry the current SEAC dive computer lineup as an authorized dealer.

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The SEAC Dive Computer Range

Seac Screen Wrist Computer

The Screen is built around the insight that the most important quality in a dive computer display is readability underwater — its large screen presents all essential dive profile data in a single, glanceable view with clearly readable characters. Two front buttons provide glove-friendly control, and contrast and brightness are adjustable for different underwater lighting conditions. Records dive data over extended periods with USB data download for post-dive analysis. Compatible with Scuba, Gauge, and Freedive modes, supporting up to two gas mixes with Bühlmann ZHL-16C algorithm and safety alarms for MOD, deco stops, and ascent speed. Available as a standalone wrist unit or as a console configuration (with SPG, or with SPG + compass).

Seac Action and Action HR — Durable, Multi-Mode Wrist Computer

The Action line (available in standard and HR, with an HR-treated case for improved corrosion resistance) covers Scuba, Gauge, and Freediving modes in a single, ultra-durable wrist computer. Scuba mode uses the Bühlmann ZHL-16C algorithm for 1 or 2 gas mixes (air, Nitrox, and O2 up to 99%), logging up to 40 hours of dive profile at 5-minute intervals. Safety alarms cover MOD violation, deco stop, ascent speed, NoFly time, desaturation, and altitude. Freediving mode logs up to 18 hours of dive/surface time and depth data. An ultra-durable structure with improved resistance to impacts, corrosion, and temperature swings pairs with an LCD screen featuring adjustable contrast and backlighting. Free Dive Manager software for Mac/PC available at Seacsub.com; USB cable for data download sold separately.

Seac Screen Console Configurations

The Screen platform is also available in console configurations — Screen Console + SPG (pressure gauge + computer) and Screen Console + SPG + Compass (full three-gauge with navigation) — providing the same large, readable Screen display in a wrist-or-console format for divers who prefer console instrumentation over wrist-only computers. Long strap compatibility for drysuit use.

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Choosing Your SEAC Computer

Diver Type	Recommended Computer	Key Reason
Recreational divers wanting maximum display readability	Seac Screen Wrist	Large, clear display; all-in-one glanceable profile view
Divers wanting console instrumentation	Seac Screen Console + SPG or + Compass	Console format; pressure gauge integrated; navigation option
Active divers including freedivers	Seac Action or Action HR	Three-mode (Scuba/Gauge/Freedive); ultra-durable; corrosion-resistant HR option

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Why Buy SEAC Dive Computers from DiveCatalog.com?

• Authorized SEAC dealer — genuine products, full manufacturer warranty
• Expert advice — our team can help you choose the right computer for your diving
• Fast shipping — in-stock items ship within one business day
• Rewards program — earn points on every purchase

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Frequently Asked Questions — SEAC Dive Computers

What algorithm do SEAC computers use?

Both the Screen and Action series use the Bühlmann ZHL-16C algorithm, a widely used and validated decompression model, with support for 1 or 2 gas mixes including air, Nitrox, and O2 mixtures up to 99%.

What is the difference between the Action and Action HR?

Both have identical diving features and modes. The Action HR uses an HR (corrosion-resistant) treated case for improved resistance to the corrosive effects of salt water, UV, and temperature swings — the preferred choice for divers who use their computer frequently in demanding environments.

What does the Seac Screen console add over the wrist version?

The console configurations integrate a pressure gauge (SPG) alongside the Screen dive computer in a single console, and the three-gauge version adds a compass — providing all primary instrumentation in one place without needing separate mounted instruments on your rig.

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Browse the full SEAC dive computer collection above and reach out if you'd like help choosing the right computer for your diving.