Shearwater Nerd 2

Shearwater Nerd 2 delivers constant dive data in a near-eye view, giving open-circuit divers a fast, glanceable readout without breaking focus. This dive computer uses a heads-up display format that mounts on the regulator hose so key information stays directly in the diver’s line of sight.

The Micro LCD paired with a magnifying lens makes the screen appear like viewing a 25-inch TV from 12 feet away, which helps readability underwater. Multiple operating modes and air integration support everything from everyday Nitrox dives to advanced multi-gas decompression planning.

• Advanced heads-up display dive computer for near-eye, in-line-of-sight monitoring
• Updated redesign for improved mounting flexibility and overall dependability
• Universal regulator mount secures to the hose so dive data stays where the eyes naturally look
• Micro LCD with magnifying optics for an enlarged apparent image similar to a 25-inch TV at 12 feet
• Supports Air, Nitrox, and 3 gas Nitrox configurations for open-circuit diving
• OC Tec mode for multi-gas trimix decompression diving
• CC INT mode for closed-circuit diving with fixed PPO2
• Gauge mode works as a bottom timer with stopwatch and dive logging
• Decompression computer with Bühlmann Gradient Factors
• 3-axis tilt-compensated digital compass for underwater navigation
• Bluetooth wireless technology and upgradeable firmware for updates and connectivity
• Air integration with support for up to 4 transmitters sold separately
• Designed and built in Canada

Technical Features
Screen resolution: 320x240
Display type: QVGA
Battery type: Internal rechargeable Li-Ion battery
Battery capacity (approx): 1.3 Wh
Battery life: 18 hours (medium brightness)
Battery replacement: 5 years (or 500 charge cycles)
Number of gases: 5 OC / 5 CC
Dive log: 1,000 hours
Depth rating: 300 m (985 ft)
OC mount fits: 17–21 mm regulator hose