Description
Compact, robust, and versatile
OSTC nano – Form follows function
As small and powerful as possible – The OSTC nano is reduced to the essentials in its size. Nevertheless, our little one can do almost everything that the larger models can do.
Engineering-driven Design
Functionality determined the aesthetics, and that’s how the design came about. The housing, milled from solid material, has as few openings as possible that need to be sealed. With every detail, the simple and robust variant was deliberately chosen.
A dive computer. No ecosystem.
51mm TFT display
The 2.0″ TFT display with its 320 x 240 pixel resolution shows everything important, of course permanently illuminated, the brightness is adjustable, in the large view important parameters are displayed particularly large and easy to read.
Easy Operation
Two sensor buttons integrated into the housing make operation easier with thick gloves and ring systems. hwOS (Sport or TECH) ensures extensive adaptability and full control – without losing focus on what is crucial: diving.
Easy charging with USB
Charging is very easy: The OSTC nano is charged via USB-C and does not require its own charging pad. A standard charger, such as the one used for smartphones and numerous other devices, is sufficient for charging.
The OSTC nano is fully usable without an account, cloud or app. The software is not limited, does not require a subscription and has no expiration date. Updates and support are available free of charge for at least 10 years.

Features
Easy charging
Easy charging via USB-C cable, charged in less than 2 hours.
Bluetooth Connection
Easy reading and connecting to a computer - in addition, the OSTC nano can also be read out or updated via USB-C.
Firmware and Updates
Free and open source.
Support over years, not over marketing cycles.
Compatible with many logbook programs
Long Battery Life
Up to 40 hours runtime in dive mode with permanently illuminated display, stand-by 12+ months
Bühlmann ZH-L16+GF
Nitrogen and helium calculation
Adjustable safety margins
Gradient (GF) factors
Surface-GF display in dive mode
Multigas (Trimix with hwOS TECH, Nitrox up to 100% O2 with hwOS Sport)
Five freely adjustable gases (one additional in dive mode)
Adjustable Parameters
Deco model configuration, warnings, display configuration and much more
Intuitive Menu Navigation
Clear and self-explanatory
3d Compass
All dive computers have a tilt-compensated 3D compass with bearing.

Technical data
Excerpt, please refer to the current instructions for all details
Display
IPS LCD monitor, viewing angle: 170°, resolution: 320 x 240 pixels, size: 2.0” (51 mm diagonal)
Connections
Bluetooth 4.0/BLE and USB-C
Sensor
Combined pressure/temperature sensor, 3D compass (tilt compensated)
Power Supply
Rechargeable lithium-ion battery, up to 40 hours of operation, standby 12+ months
Controls
Two integrated sensor buttons
Housing
Milled from solid material and hard-anodized, impact-resistant glass pane
Dimensions, Weight
The OSTC nano is exceptionally compact and lightweight.
66 mm x 48 mm x 21 mm, 130 grams
Operating Depth
120 meters
Package Contents
OSTC nano dive computer, firmware by heinrichs weikamp, USB-C cable, bungee, stable neoprene box, display protection film (already installed)










