Seac Action, Dive Computer with Scuba and Freediving Mode,

Product Overview

The SEAC ACTION is a versatile wrist-mounted dive computer designed for both scuba diving and freediving enthusiasts. It combines intuitive operation with advanced dive management features, making it ideal for recreational divers who want reliable performance across different underwater disciplines. With three dedicated operating modes, comprehensive safety alerts, and robust data logging, this device supports safe and informed diving decisions. Whether you’re planning a deep scuba dive or timing your freediving sessions, the SEAC ACTION provides essential tools in a durable, user-friendly package.

Key Features

• SCUBA MODE: Offers full management of recreational dive profiles using the Bühlmann ZHL-16C decompression algorithm, supporting up to two gas mixes including air, Nitrox, and oxygen-enriched blends with up to 99% O2 concentration. This ensures accurate no-decompression limits and safe ascent planning.
• GAUGE MODE: Functions as a standalone depth gauge and stopwatch, allowing divers to monitor their dive profiles manually without decompression calculations—ideal for technical divers or those using external planning tools.
• FREEDIVING MODE: Tracks dive and surface intervals, along with current and maximum depth reached, helping freedivers monitor performance and recovery times during training or recreational dives.
• LOGBOOK MEMORY: Stores extensive dive data—up to 40 hours of scuba diving with recordings every 5 seconds, and 18 hours of freediving activity with records every 2 seconds—enabling detailed post-dive analysis.
• SAFETY ALARMS: Includes critical warnings such as MOD (Maximum Operating Depth) exceeded, deco stop violation, and excessive ascent speed. Also provides NoFly time and desaturation calculations, plus alerts for maximum permitted altitude to prevent decompression sickness risks.
• “NDL ONLY” DIVE PLANNER: Allows pre-dive planning focused on no-decompression limits, helping users assess dive feasibility before entering the water.
• DIVING SOFTWARE & DATA TRANSFER: Compatible with Dive Manager software for Mac and PC (requires Windows 10), available free from seacsub.com. Dive logs can be downloaded via USB cable (sold separately) for detailed review and archiving.
• BUILT FOR THE DEPTHS: Features an ultra-durable housing treated to resist impacts, corrosion, and temperature fluctuations—ensuring reliable performance in harsh underwater environments.
• CLEAR VISIBILITY: Equipped with an LCD screen featuring adjustable backlighting and contrast settings for easy readability in low-light or high-glance underwater conditions.
• LONG-LASTING POWER: Powered by a CR2450 battery designed for extended use, reducing the frequency of replacements during active diving seasons.

Technical Specifications

• Operating Modes: SCUBA, Gauge, Freediving
• Decompression Algorithm: Bühlmann ZHL-16C
• Gas Mix Support: Air, Nitrox, O2 up to 99% (1 or 2 mixes)
• Scuba Logbook: 40 hours, 5-second intervals
• Freediving Logbook: 18 hours, 2-second intervals
• Safety Alarms: MOD exceeded, deco stop violated, ascent speed, NoFly time, desaturation, altitude warning
• Dive Planner: NDL-only mode
• Software: Dive Manager (Mac/PC, Windows 10 required), free download
• Data Transfer: USB cable (sold separately)
• Construction: Impact, corrosion, and temperature-resistant housing
• Display: LCD with adjustable backlight and contrast
• Battery: CR2450

Benefits & Use Cases

The SEAC ACTION is suited for recreational scuba divers who dive with air or Nitrox, as well as freedivers seeking a reliable way to track depth and surface intervals. Its dual-mode capability eliminates the need for separate devices, streamlining gear and reducing complexity. The inclusion of the Bühlmann algorithm ensures conservative and scientifically backed decompression management, while real-time safety alarms help prevent common diving errors. Divers can use the NDL planner to assess dive profiles in advance, and the logbook function supports ongoing training and certification tracking. The ability to download dives to a computer allows for long-term record keeping and performance review. Its rugged build makes it suitable for frequent use in saltwater, freshwater, and varying climate conditions.

Important Notes

The USB cable required for data transfer is sold separately and must be purchased to use the Dive Manager software. Software compatibility requires Windows 10 for PC users, though Mac support is also available. Always ensure the battery is properly sealed before diving. Regular maintenance and rinsing with fresh water after use are recommended to preserve the unit’s longevity. This dive computer is intended for recreational use and should not replace proper dive training or buddy protocols.