Shearwater Petrel 3


The PETREL 3 gives divers our most connected experience. A stunning, easy-to-read, 2.6” AMOLED display is protected by a toughened glass lens, titanium bezel, and piezo touch buttons.

Air integration is standard with up to four Shearwater transmitters to customize a solution from open circuit to rebreather and bailout gas pressure monitoring.

Safety is increased with a strong vibration alert system, and a user-changeable AA battery offers long dive times and ease of replacement.

PETREL 3 is available in standalone or rebreather monitoring models, including DiveCAN, 4-pin AK, and Fischer port connections.

Dive Modes:

  • OC Rec - 3 gas nitrox recreational computer
  • OC Tec - Multi gas, trimix decompression computer
  • CC / BO - Closed circuit fixed PPO2
  • Gauge - Bottom timer with stop watch and dive logging



  • User Replaceable AA Battery
    Air, Nitrox, Trimix capable
    Quick OC bailout from CC
    3 axis, tilt compensated, digital compass
    Dive Planning
    Bühlmann GF algorithm
    Vibration motor alerts
    **Only 1.5V non-rechargeable lithium and 3.7V lithium rechargeable batteries support vibration functions.
    Aluminosilicate toughened glass
    Optional VPM-B, Optional DCIEM
    Dive logging
    Upgradeable firmware
    Bluetooth® wireless technology
    Optional air integration
    Up to 4 transmitters (optional)



  • Screen Resolution - 320x240 QVGA
  • Display Type - AMOLED
  • Battery Type - Single AA (any type)
  • AA Alkaline - 40 Hours
  • SAFT LS14500 - 100 Hours
  • Number of Gases - 5 OC / 5 CC
  • Computer (WxHxD) - 83x74x39mm (3.3"x2.9"2.15")
  • Package (WxHxD) - 120x100x77mm (4.7"x3.9"x3")
  • Dive Log - 1000 Hours
  • Computer - 260g (0.57lbs)
  • Package - 360g (0.79lbs)