Aqualung

Aqualung i300C

A step up from the i200C with 3-gas nitrox and altitude adjustment to 14,000ft.

Open BLE sync (libdivecomputer)

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

Aqualung i300C
3.0Comparison Score
$399
Buy on AmazonBuy on Scuba.com
Released2017
Max depth rating100m
AlgorithmPelagic Z+
Air integrationnone
Wirelessbluetooth
DisplaySegment LCD
Batteryuser-replaceable
Digital compassNo
Gas typesair, nitrox
Gas switches3
CCR capableNo

"Gas switches" is how many different mixes this computer can be programmed to switch between mid-dive, mostly relevant for technical/staged-decompression diving. It doesn't tell you which gas types (air, nitrox, trimix) are supported. See Gas types and the product description above for that.

Pros
  • Manages up to 3 nitrox mixes per dive
  • User-changeable, globally available standard battery
  • Bluetooth sync to Aqualung's companion app for logs and settings
Cons
  • No digital compass
  • No air integration on this model
  • Same segment LCD as the cheaper i200C, no color upgrade
Diver community sentiment
Mostly positive

On Scubaboard, recreational divers generally describe the i300C as a reliable, easy-to-use, two-button entry-level computer that gives accurate depth/time readings consistent with dive buddies' computers, praised especially for Bluetooth syncing. The most recurring complaint is the companion DiverLog+ app, which posters call "kludgy" and criticize for a poor UI (can't delete preset dive sites, can't resize columns, no cumulative dive-time tracking) and for nudging users toward a paid DiveCloud subscription; several divers say they switched to third-party apps like Subsurface instead. Other gripes include weak low-light screen visibility and a strap that can't accept alternate boot/bungee mounts.

Scubaboard: i300C review threadScubaboard: predecessor i300 review

Summarized from public forum discussion (Scubaboard, Reddit, and similar), not a survey we ran ourselves. See the linked threads for the original conversations.

The i300C sits just above the i200C in Aqualung’s recreational lineup, adding a third switchable nitrox gas and altitude adjustment up to 14,000 feet while keeping the same monochrome segment display and Pelagic Z+ algorithm.