NiTek Q4 CCR


The NiTek Q4 interfaces with your rebreather via an additional O2 sensor (sold separately) and monitors the loop PO2. The NiTek Q4 comes fully unlocked for Full Trimix and Custom Gradient Factors. An optional Digital Compass is available as an unlock purchase. A hardware I/O port connects to the rebreather O2 sensor via a Fischer connector data cable, which is available separately.

Wrist-mounted, the NiTek Q4 is carries the tiniest of footprints, which is an added benefit for gear-laden rebreather divers. Better yet, the viewing screen takes up the entire footprint which means you get a large, easily readible display that is a bright, yellow OLED. Housed in a mil-spec aluminum case with mineral glass viewing port, the NiTek Q4 is designed for the harsh uses of technical diving.

Intuitive, push button naviation allows you to focus on your rebreather and makes programming the NiTek Q4 a breeze. A rechargable lithium [continued]

polymer battery is recharged using a standard mini-USB cable (provided), and can be recharged via wall outlet, desktop computer, or car charger.

The NiTek Q4 uses the proven Buhlman ZHL-16 algorithm along with a default gradient factor of 30/75. It has three pre-set GF settings to choose from that allow for deep stops or shallow stops, plus a custom gradient factor setting.

Made in the USA.


    • Standard 7-gas hypoxic Trimix (8%-99% O2, 0-92% He)
    • Standard custom gradient factors
    • Optional digital compass
    • Standard closed circuit mode with external PO2 monitoring
    • Buhlman ZHL-16 algorithm with three preset gradient factors of 30/75, 40/100 or 75/95
    • Visual alarms
    • Pre-dive planner gives NDL for selected gases
    • Dive logging
    • Imperial/Metric settings
    • Freshwater / Saltwater settings
    • Lithium polymer 3.7V rechargeable battery

    Hardware Specs

    • Yellow OLED Display
    • Large, 24-point font
    • Visible in complete darkness
    • Scratch-resistant mineral glass
    • User-chargeable lithium polymer battery
    • Rated to a depth of 150m (492 ft)
    • Dimensions: 3.5 x 2.3 x 1 in (8.9 x 5.7 x 2.5 cm)
    • [continued]
  • 8.4 oz (238 g)
  • CE certification pending (EN13319, EN 61000)


  • Self donning ladder lock wrist strap
  • USB Cable
  • 120V US AC charger

Optional Accessories

  • Carrying bag
  • Fischer connector data cable (
  • Bungee wrist mount
  • Screen protector
  • Replacement USB cap/o-ring service kit
  • Replacement push button kit

Be sure to download the free version of Workbench software. Any firmware updates for the NiTek Q series of computers are easily installed from the convenience of your desktop or laptop computer.

Please click here to read our Warranty Guarantee

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Dive Rite is the pioneering creator of technical SCUBA diving equipment for advanced, wreck and cave diving. Our Catalog is vast, ranging from backplates, harnesses and wings (BCDs) to regulators, lights, drysuits and rebreathers. To purchase Dive Rite technical dive gear, find a dealer near you. Also, see the Tech Tour schedule to learn if the Dive Rite team will be near you soon.