Our most powerful unit to date, compressed into a smaller, lighter package and featuring support for Apple Find My, the PRECISION 3+ Powermeter is a proven choice of pros and weekend warriors alike.

Whether you’re fighting for a Kona qualification spot, logging countless hours on virtual riding platforms or looking to better your time up the local KOM segment, you want accurate and reliable tools to unlock your potential.

With up to 800 hours of battery life, an automatic terrain selector, +/-1% accuracy and backed by our industry-leading 3-year warranty, the PRECISION 3+ Powermeter will be your trusted tool for years to come.

Product features

Find my Iphone

Apple find my

Ultra low profile

Ultra low profile

UP to 800 hour battery life

Up to 800 hour battery life

Automatic Terrain Selctor

Automatic terrain selector

Weight 9 grams

9 grams weight

+/- 1% accuracy


3 year warranty


    Offering the peace of mind in knowing where your power meter is.
    With up to 800 hours of battery life, using the same CR2032 coin cell battery, you won’t have to
    worry about changing your PRECISION 3+ battery for years to come.
    Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based
    power meter to use 3 strain gauges to measure all forces in your pedal stroke.
    Detects the terrain you’re riding on for more responsive cadence and power feedback/data. Ride
    the roads less traveled with confidence.
    With an ultra low profile design, the PRECISION 3+ Powermeter is compatible with more bike
    frames than ever before.
    At a glance, you can now see when your power meter has turned on, performed a successful
    Zero-offset, or has a low battery. Although, don’t expect to see that low battery indicator for a while!
    Get the same numbers training inside and outside. The PRECISION 3+ Powermeter is both ANT+
    and BLE compatible so you can use it on your preferred head unit and favorite indoor training app.
    Based in the foothills of the Canadian Rockies, we were tired of training tools not designed to
    work in our tough environment. With an IPX7 waterproof rating you can be assured that your
    power meter can handle the toughest conditions.
    A lot can happen in 3 years. You probably won’t need to use it, but it’s reassuring to know that all
    4iiii power meters are backed by an industry leading 3-year warranty.

Device Compatibility

4iiii PRECISION 3 power meters use both the ANT+ PWR and Bluetooth Smart Cycling Power Service standards, which makes them compatible with nearly every headunit, smartphone, or computer you wish to connect to.

Check your recording device documentation for ANT+ PWR or Bluetooth Smart (also called BLE, BTLE, or BT4.0) Cycling Power Service capability.

How does it work?

The PRECISION 3+ Powermeter is so much more than a power meter. It's your training partner that offers peace of mind. While you are riding, your PRECISION 3+ Powermeter will transmit watts, cadence, and calories to your head unit of choice. While the power meter is not in use, Find My is enabled and allows you
to see its location on a map. You can add your power meter to the Find My app and locate it on an iPhone, iPad, Mac or using the Find Items app on an Apple Watch.


  • Module Weight 9g (0.3oz)
  • Power Range 0-4000W
  • Cadence Range 30-170RPM
  • Communication Protocols ANT+, Bluetooth
  • Operating Temperature 0 to 50°C (32-122°F)
  • Battery Type CR2032 lithium ion coin cell
  • Battery Life up to 800 hours
  • Waterproof Rating IPX7
  • Battery Type CR2032 lithium ion coin cell
  • Height 5.5mm


Software & Documentation
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