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Shearwater Research NERD 2 Dive Computer - Stand Alone

SWR-12501 (01/23)
Shearwater Research
Starting at: $3,000.00
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The Shearwater Research NERD 2 Stand Alone is a heads up (HUD) dive computer. The Near Eye Remote Display (NERD) incorporates a powerful feature set, easy to understand menus, easy to read full-colour display, and a special optics and mounting system that projects the equivalent of the Shearwater Perdix-AI as a heads up display directly in the eye of the diver.

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The Shearwater NERD is a full decompression dive computer incorporating the functionality of the Shearwater Research Perdix AI, but with a display mounted on the diver's regulator second stage. This revolutionary device keeps crucial information in your line-of-sight for the entire dive.

Thanks to the Micro LCD display and magnifying lens, the data appears as if displayed on a 32" TV screen 12" away, with no need to focus. If you can watch a TV without glasses, and even if you have a bifocal lens mask for reading gauges, you should have no problem seeing the NERD 2. The display is unobtrusive as it virtually disappears when you look straight ahead. The numbers are there when you need them at any point during the dive, and out of the way when you don't. The full-colour display is used to convey additional meaning with the information being displayed. When information is yellow or red, it calls the diver's attention to an unusual value or problem.

During a decompression dive, the Shearwater NERD 2 provides complete information displays of all required stop times. The NERD 2 can provide time-to-surface based on "look ahead" at planned gas switches. Multiple gas definition presets are supported with any combination of oxygen, nitrogen and helium.

The Shearwater NERD 2 will NOT "lockout" after a missed stop or ascent rate violation.

Out of the box, the Shearwater NERD 2 includes open-circuit and closed-circuit Air, Nitrox and Trimix mixed gas functionality along with several enhanced navigation features for the three-axis tilt-compensated digital compass. The standard firmware supports English language menus and both imperial/metric units of measure.

The Shearwater NERD 2 is capable of wirelessly connecting to either one or two optional transmitters giving the diver ability to monitor up to two tank pressures. Air integration is optional for all modes, from OC Rec to CC/BO. The tank pressure(s), in PSI or BAR, and GTR can be displayed to the customisable slots on the main display screen or accessed through the underlying information screens. Enabling the AI feature causes approximately 10% decrease in battery life.

After the dive, the Shearwater NERD 2 communicates via next-generation Bluetooth Smart Ready with iOS devices such as the iPad and iPhone. In addition to current Shearwater and third party support for Mac and PC desktop applications, users are able to download dives using their iOS devices in conjunction with third-party applications. The NERD 2 incorporates a built-in lithium-ion rechargeable battery. Users can expect a minimum of 18 dive hours, on medium brightness, from a fully charged NERD 2 and 5 charges from the charge bank.

Included with every Shearwater NERD2-SA from The Scuba Doctor are a regulator mount, recharging clip, charging bank, USB cable and printed Quick Start Guide with instructions for downloading software from the Shearwater Research website. The software includes a complete dive log manager, compatible with both MS Windows and MAC OS X. The dive log manager supports log downloads and firmware updates via the Bluetooth wireless interface. An optional VPM-B unlock code enables using the Varying Permeability Model (VPM-B and VPM-B/GFS) algorithm for calculating decompression.

Shearwater Research NERD 2 Stand Alone Features

  • Technical dive computer with a "Heads Up Display"
  • Crucial data in your line-of-sight for the entire dive
  • Full colour display with magnifying lens is easy to read
  • Air, Nitrox and Trimix mixed gas for OC or CCR
  • Feature rich with the latest diving technology

Recreational Open-Circuit Features:
In addition, technical diving modes, key features of the Recreational Open-Circuit mode (aka Recreational Nitrox mode) include a simpler menu structure, less cluttered display with a larger font and configurable bottom row, optional safety stops, and a no-decompression limit dive planner. The simplified settings allow for three breathing gas mixtures (Air or Nitrox) and place a greater emphasis on the maximum operating depth (MOD) and no decompression time limit (NDL). The display prominently warns the diver if their depth is near, at or exceeds the MOD of the selected breathing gas. The diver also simply selects one of three levels of NDL conservatism and during the dive, a bar graph turns from green to red as the diver approaches the NDL. An optional 3-minute countdown safety stop starts when the diver reaches shallower than 6 metres (20 feet) on the ascent. If the diver exceeds the NDL and requires stops, the display turns red and warns "DECO STOP" with the mandatory depth and stop times.

Shearwater Research NERD 2 SA Technical Features

  • Depth, time and oxygen
  • sensor display
  • Bühlmann decompression model with gradient factors conservatism
  • Optional VPM-B decompression model
  • Imperial and metric displays
  • NERD 2 available in Standalone, Fischer and DiveCAN models
  • Any combination of oxygen, nitrogen, and helium (Air, Nitrox, Trimix)
  • Open and closed circuit, switchable during a dive
  • External (EXT) PPO2 monitoring from 1, 2 or 3 cells
  • Internal PPO2 mode with 2 set-points
  • Automatic PPO2 set-point switching (configurable)
  • 5 CC and 5 OC gases
  • Gases can be changed and added during a dive CNS tracking
  • No lockout from violating deco stops
  • Rechargeable lithium-ion battery providing up to 18 hours of dive time
  • Tilt compensated digital compass
  • 1000 hour dive log memory
  • Log downloads and firmware upgrades using Bluetooth
  • A menu system that adapts to diving status
  • Dual-transmitter Air integration
  • Auto turn-off after 15 minutes on the surface
  • Depth sensor rated to 140 msw (450 fsw)

Multiple Diving Modes

OC Recreational
Three gas nitrox computer with features for the serious recreational diving enthusiast. Includes adaptive safety stop and NDL bar graph.

OC Technical
5 OC gases Trimix enabled by default.

Closed Circuit/Bailout, 5 OC/5 CC gases, Trimix enabled, Constant PO2 for closed circuit.

External Monitoring
Real-time PPO2 monitoring of 1 to 3 O2 sensors. This includes semi-closed rebreathers.

Digital Compass
Optional 3 axis, tilt compensated, digital compass. Available in all modes.

Depth, time, resettable stopwatch function. Full dive logging.

Shearwater Research NERD 2 SA Technical Specs

OC Rec 3 gas nitrox recreational computer
OC Tec Multi gas, trimix decompression computer
CC INT Closed circuit fixed PPO2
(Fischer only)
Closed circuit real time monitoring of 1 or 3 O2 sensors
(Fischer only)
Semi-closed monitoring of PPO2 for 1-3 O2 sensors
Gauge Bottom timer with stop watch and dive logging


Features Nerd 2 SA Nerd 2 Fischer
Decompression Computer Yes Yes
Open Circuit Yes Yes
Trimix / Nitrox / Air Compatible Yes Yes
Bühlmann Gradient Factors Yes Yes
Rebreather Yes Yes
Closed Circuit Fixed PPO2 Yes Yes
Closed Circuit External PPO2   Yes
Semi-Closed Circuit External PPO2   Yes
Gauge Mode Yes Yes
3 axis, tilt compensated digital compass Yes Yes
Bluetooth Smart Yes Yes
Upgradeable Firmware Yes Yes
Air Integration Yes Yes
Number of Transmitters 1 or 2 1 or 2


Optional Add-Ons & Accessories
OC Mount Kits
CC Mount Kits


Specifications Nerd 2 SA Nerd 2 Fischer
Screen Resolution 320x240
Display Type QVGA
Battery Type Rechargeable Li-Ion Battery
Battery Life 18 Hours (Medium Brightness)
Battery Replacement 5 Years (or 500 charge cycles)
Number of Gases 5 OC / 5 CC
Rebreather Connectivity n/a Fischer 103, 7-pin
Dive Log 1,000 Hours
Depth Rating 300m (985ft)
(WxDxH) 33mm x 85.81mm x 44mm
Weight 74g 148g
Ballistic Nylon Case  
(WxDxH) 240mm x 240mm x 60mm
Weight 313g


NERD 2 Rebreather Mount

NERD 2 Open Circuit Mount

In the Box

  • CCR/SCR Mounting Kit
  • USB Charging Cable
  • Power Bank
  • BlueTooth Dongle
  • Case
  • Rechargeble Battery
  • Spare O-rings

Please Note: We try to keep Shearwater Research products in stock. As we source them direct from Shearwater Research in Canada, it can take 5 to 10 days for more stock to arrive if we run out.

Warranty Information:
This product has a limited warranty of two (2) years.

Please download/read the Shearwater Research Nerd 2 Brochure (PDF, 2 pages, 1 Mb).

Please download/read the Shearwater Research Nerd 2 Operating Instructions Manual (PDF, 117 pages, 11 Mb). This manual provides operating instructions for the following NERD 2 Models:

  • Stand Alone Model (SA)
  • Fischer Connector Model
  • DiveCAN Rebreather Controller
  • DiveCAN Rebreather Monitor

Note: This item cannot be delivered outside of Australia.

(10/20 LRB)

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