Shearwater · PRODUCT GUIDEShearwater Petrel 3 Monitor (4-Pin) Dive Computer Review
Research checked · Not scored
Review
Manufacturer information and review searches have been checked. No eligible independent overall rating was verified, so this product remains unscored.
How we calculate scores →About this gear
Petrel 3 Monitor (4-Pin) is the analogue four-pin external-monitoring version of Shearwater’s large-screen computer. It reads oxygen sensors and offers a 2.6-inch AMOLED display, vibration alerts, a replaceable AA battery and four-transmitter pressure-monitoring capability. The manufacturer offers 18-inch and 30-inch cable configurations.
Consider before buying
Choose the cable and connector for an explicitly compatible rebreather. A four-pin connector is not interchangeable with Fischer or DiveCAN merely because the computers look similar. Confirm whether the longer cable improves routing or simply adds excess length to your particular rig.
Our take
Choose this model when the rebreather requires the analogue four-pin monitor. Fischer is an alternative only where the equipment supports that connection. General Petrel 3 reviews and retailer customer stars do not provide a verified independent overall grade for this cable-specific model.
Specifications at a glance
- Equipment type
- Dive computer
- Connection
- 4-pin analogue CCR monitoring
- Cable options
- 18 inches / 30 inches
- Display
- 2.6-inch AMOLED, 320 × 240
- Battery
- Single replaceable AA
- Dimensions / weight
- 83 × 75.5 × 39 mm / 285 g EXT
- Manufacturer depth rating
- 290 m
Compare an alternative
A closer look at Petrel 3 Monitor (4-Pin)
Editorial profile written
Questions to settle before buying
Based on the equipment type in the researched profile.
- Does this exact model support the dive modes you need?
- Can you read the screen and operate the buttons with your normal gloves?
- Are the charger, transmitter and mounting accessories included or separate?
Explore the related equipment section →
What still needs checking
Independent review coverage and model updates still need ongoing research.
We have not yet added independent review evidence for this entry. Manufacturer claims do not establish long-term reliability, value or a performance score.
Where this research comes from
Read the source ↗ · Open the product listing ↗
Exact product name and URL in manufacturer feed · cached source, collected 2026-10-02 · Catalogue audit 2026-10-02.
Source matching and feature extraction are automated. An editorial profile, independent review and hands-on test are separate things; none is implied by this audit.
