Oceanic

Oceanic Geo 4.0

The Geo Air's sibling without wireless air integration, same dual algorithm, lower price.

Open BLE sync (libdivecomputer)

Syncs wirelessly with third-party apps (Subsurface, Currents, etc.), not just the manufacturer app.

Oceanic Geo 4.0
$440
Released2019
Max depth rating100m
AlgorithmOceanic Dual Algorithm (DSAT/Pelagic Z+)
Air integrationnone
Wirelessbluetooth
DisplayLarge, legible LCD
Batteryuser-replaceable
Digital compassNo
Gas typesair, nitrox
Gas switches—
CCR capableNo
Pros
  • Same dual-algorithm engine and four modes (Air, Gauge, Freediving, Watch) as the Geo Air, at a lower price
  • Bluetooth sync to Oceanic's companion app
  • User-replaceable battery and a 24-dive log
Cons
  • No wireless air integration (see the Geo Air for that)
  • No digital compass
  • Monochrome display only

The Geo 4.0 is the non-air-integrated counterpart to the Geo Air in Oceanic’s watch-style Geo line, same dual-algorithm engine, four dive modes, and Bluetooth sync, just without the option to add a wireless tank pressure transmitter.