Heinrichs Weikamp

Heinrichs Weikamp OSTC+

A wireless-charging OSTC with a 2.4in display and 6+ month standby.

Open BLE sync (libdivecomputer)

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

Heinrichs Weikamp OSTC+
3.8Comparison Score
$910
Released—
Max depth rating120m
AlgorithmBühlmann ZHL-16C with optional gradient factors
Air integrationnone
Wirelessbluetooth
Display2.4in LCD-TFT
Batteryrechargeable
Digital compassYes
Gas typesair, nitrox, trimix
Gas switches5
CCR capableYes

"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
  • Wireless (Qi-style) charging pad, no contacts to corrode
  • 2.4in display stays readable in direct sun or low light
  • Standby battery life rated at 6+ months between dives
Cons
  • Could not confirm gas count or compass presence for this specific variant
  • Rechargeable-only battery, no field-swappable option
  • Niche brand with a smaller dive-shop support network than the majors
Diver community sentiment
Mixed opinions

On Scubaboard, owners consistently praise the OSTC+'s interface, calling it more intuitive and better organized than Shearwater's Petrel/Perdix line, along with fast Bluetooth syncing and the ability to change settings over Bluetooth or via desktop software. Heinrichs Weikamp's customer service is repeatedly singled out as excellent, with multiple users reporting free out-of-warranty repairs. The recurring complaint is build reliability: one long-time owner reported five failures across two units before switching to a Shearwater Petrel, and others noted the piezo touch buttons felt less responsive than the magnetic buttons on the later OSTC 3 or Shearwater's buttons generally.

Scubaboard: OSTC+/OSTC Plus reliability discussionScubaboard: OSTC display/UI and button feedback

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

The OSTC+ sits in the middle of Heinrichs Weikamp’s open-source lineup, pairing wireless charging and Bluetooth sync with the same Bühlmann/GF firmware as the rest of the OSTC family.