VRx Dive Computer by VR Technology LTD

The VRx has an ergonomic shape, low weight, rechargeable Lithium Ion power system, and offers a user adjustable decompression algorithm (VGM). The new VGM decompression algorithm incorporates the best of Bhülmann gradient factors, bubble models and Haldane dissolved gas models . The built-in battery system is a step towards reducing the burden on the environment and is supplied with an international charger capable of charging from any 240v/110v source, with an optional solar source charger.

The VRx is a full decompression dive computer incorporating the Variable Gradient Model (VGM) decompression algorithm, and a derivative of the Bühlmann ZH-L16 algorithm with modifications to support deep stops, adjustable shallow stop depth, and dynamic decompression ceilings. The VRx allows user selectable switching between both algorithms. During a decompression dive, the VRx provides complete information displays of all required stop times. The VRx can provide time-to-surface based on "look ahead" at planned gas switches. The VRx will NOT "lockout" after a missed stop or ascent rate violation. The VRx also provides outstanding support for semi-closed and fully closed-circuit rebreathers.
About VGM - Haldane theory is the basis of most decompression algorithms, from simple dissolved gas models through to complex bubble growth systems. Using their own extensive track record in dissolved gas and bubble growth modeling, VR Technology has pioneered a new decompression algorithm utilizing the benefits found in all of the Haldane systems while implementing some new techniques.
Most algorithms heavily penalize the diver for using large fractions of helium, but not with VGM. The VGM algorithm takes into account the high helium content becoming common in rebreather technical diving. VGM allows the diver to extensively customize the deep to shallow stop ratio and the overall stop time at each level. The VRx also provides for user selection of the well established Bühlmann ZH-L16 algorithm with deep stops.

Features of the VRx Dive Computer
• Built in LED emergency backup light
• Low profile design
• High resolution graphics
• Enhanced ergonomic functionality
• Accelerometer based "Twist" and "Flip" modes
• Variable Gradient Model (VGM) algorithm
• 1 or 3 sensor PO2 monitoring
• Lithium Ion rechargeable battery system
• 4 year battery replacement warranty
• HD backlit display for OUTSTANDING visibility
• Fast and easy screen navigation
• Dive Profile and Look Ahead Graphics on Dive Screen
• User customizable Dive Information Screen
• Mini-Screen pre-dive checks
• Air/Nitrox/Trimix capable with up to 10 gas switch presets
• CNS % and OTU tracking of oxygen exposure
• Programmable safety factors to increase conservancy
• Logbook of 100 dives at 10 sec data collection intervals
• Water activated and fully programmable underwater
• Warnings for PO2, deco violation, air break and ascent rate
• Ambient temperature tracking and display  • Date & time display both surface and underwater
• Desaturation and Time-to-Fly Information
• On-Board Dive Planner/Simulator
• Calendar with annotations
• Video Game (shallow stops & surface interval only)
• Back lighting with variable timing and intensity
• Right or Left wrist mountable
• Imperial or Metric units of measure
• Aluminum housing w/depth compensating wrist strap
• Gas Blending Calculator