Aqualung

Aqualung i750TC

A color OLED computer with wireless air integration. Appears to have been superseded by the i770R and shows up as a closeout at some retailers. Price is an approximate street price, not confirmed as current MSRP.

Open BLE sync (libdivecomputer)

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

Aqualung i750TC
3.5Comparison Score
$799
Released2016
Max depth rating100m
AlgorithmPelagic Z+
Air integrationwireless
Wirelessbluetooth
DisplayFull-color OLED
Batteryuser-replaceable
Digital compassYes
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
  • Crisp color OLED screen, easy to read underwater
  • 3-axis digital compass built in
  • Paired-for-life wireless transmitter option for hoseless air integration
Cons
  • Appears to be discontinued/replaced by the i770R in Aqualung's current lineup
  • User-replaceable battery is less convenient than one battery type across the line
  • Retail pricing is inconsistent across sellers, suggesting closeout stock
Diver community sentiment
Mixed opinions

Divers on Scubaboard and the MacDive forum generally like the i750TC's value for money, air integration, compact design, and 3-axis compass, with several noting it undercuts Shearwater and Suunto pricing. The single most recurring complaint is that the OLED screen is too dim and hard to read in bright sunlight or clear tropical water, which multiple owners called frustrating. A secondary recurring complaint is unreliable Bluetooth/USB dive-log downloads to PC and Mac software, including partial downloads and error codes; one frustrated owner said they wished they'd bought a Shearwater Perdix instead. Some users report no such issues and are satisfied.

Scubaboard: i750TC discussion threadMacDive Forums: i750 connection failureDivernet: i750TC 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 i750TC was Aqualung’s color-screen, air-integrated computer before the i770R replaced it. It’s still findable through some retailers, but Aqualung’s current site steers new buyers toward the i770R instead, so treat this one as legacy/closeout stock rather than a current product.