4iii crankset with Precision 3+ Pro Ultegra R8100 power meter

Get ready to elevate your riding experience with the new PRECISION 3+ PRO Powermeter with Apple Find My. Delivering the same reliable and highly accurate power data you’ve come to expect from 4iiii, while enjoying the peace of mind that comes with knowing the location of your bike.
With advanced metrics such as left/right balance, pedal smoothness and torque effectiveness, the PRECISION 3+ PRO Powermeter provides the data you need for training and racing. With up to 550 hours of battery life, an automatic terrain selector, +/-1% accuracy and backed by industry-leading 3-year warranty, the PRECISION 3+ PRO Powermeter will be your trusted tool for years to come.

How does it work?
The PRECISION 3+ Powermeter is so much more than a power meter. It's a training partner that gives you peace of mind. During your ride, the PRECISION 3+ Powermeter sends power, cadence and calorie data to your favourite bike computer. When the power meter is not in use, Find My is activated so you can see your bike's location on a map. Add your power meter to the Find My app to locate it on an iPhone, iPad, Mac, or via the Find Items app on an Apple Watch.

In the Box
Once your ride-ready PRECISION 3+ PRO Powermeter arrives, it just needs to be installed on your bike using the standard Shimano crank installation process. Connect a head unit or computer, and you can start riding with power. Connect to the Find My app with your iPhone or iPad to start tracking your power meter.

Features

• Apple Find My: Offering the peace of mind in knowing where your power meter is.
• Battery Life: With up to 550 hours of battery life, you won’t have to worry about changing your battery for years to come.
• Accuracy in 3D: 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.
• Automatic Terrain Selector: Detects the terrain you’re riding on for more responsive cadence and power feedback/data. Ride the roads less traveled with confidence.
• Cycling Metrics: Get more data like pedal smoothness and torque effectiveness to analyze and optimize your pedal stroke.
• Left Right Balance: A dual power meter measures the power from each individual leg to calculate your total power output.
• Light Weight: 4iiii makes the lightest power meters on the market. We’re committed to helping you get faster, one gram at a time.
• Ultra Low Profile: With an ultra low profile design, your 4iiii power meter is compatible with more bike frames than ever before.
• Waterproof: Designed to work in tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions.

Tech spec

• Type: Dual
• Apple Find My
• ANT+ & Bluetooth Smart
• Accuracy +/- 1 %
• Automatic Terrain Selector
• Cycling Metrics
• Left/Right Balance
• CR2032 Coin Cell 
• Battery Life: Up to 550 hours
• Waterproof Rating: IPx7
• Cadence Range: 30 - 170 rpm
• Power Range: 0 - 4,000 W
• Profile: 5.5 mm
• Weight: 29 g
• Operating Temperature: 0 - 50 ºC
• Storage Temperature: -40 - 60 ºC