Shearwater Perdix


* Air/Nitrox/Trimix capable* 5 open-circuit gas switch presets* Bühlmann ZHL-16C with Gradient Factors* Easy to read large full color screen* Logbook of last 1000 hours of diving



.         Air/Nitrox/Trimix capable

·         5 open-circuit gas switch presets

·         Bühlmann ZHL-16C with Gradient Factors

·         Optional Varying Permeability Model (VPM-B)

·         %CNS oxygen exposure tracking

·         Ascent rate monitor

·         Date, time and temp display

·         Easy to read large full color screen

·         Easy to use adaptive menus

·         Logbook of last 1000 hours of diving

·         Operational to at least { 853 ft | 260 m }

·         Battery voltage and warning

·         Metric and Imperial

·         Right or left wrist mountable

·         Battery life (Saft 3.6V LS14500) typically 130 hours of diving at medium brightness

·         Battery life (1.5V Alkaline) typically 45 hours of diving at medium brightness


·         Constant PPO2 Set Point

·         Automatic Set Point Switching

·         5 additional CCR Diluent gas presets

·         2 button push OC bailout

·         NO external PO2 monitoring (See Petrel2-EXT)

Key features of the Recreational Open-Circuit mode (Nitrox mode) include a simpler menu display, larger font, configurable bottom row, optional safety stops, and a no-decompression limit dive planner. Allows for three breathing gas mixtures (Air or Nitrox) and places a greater emphasis on the maximum operating depth (MOD) and no decompression time limit (NDL).

Displays MOD of the selected breathing gas. The diver 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 { 20 feet | 6 meters } 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.