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Power Meter Comparison

Feature PRECISION 3+ PRO PRECISION 3+ PRECISION 3 PRECISION PRO PRECISION
Type Dual Non-drive Side Non-drive Side Dual Non-drive Side
Upgradeable - -
- -
- -
-
CR2032 Coin Cell
up to 550 hrs up to 800 hrs 800 hrs 100+ hrs 100+ hrs
IPx7 IPx7 IPx7 IPx7, IPx5 IPx7, IPx5
Cadence Rating 30 - 170rpm 30 - 170rpm 30 - 170rpm 30 - 150rpm 30 - 150rpm
Power Range 0 - 4,000 W 0 - 4,000 W 0 - 4,000 W 0 - 4,000 W 0 - 4,000 W
5.5 mm 5.5 mm 5.5 mm 7.5 mm 7.5 mm
29 g 9 g 9 g 25 g 9 g
Operating Temperature 0 - 50 ºC 0 - 50 ºC 0 - 50 ºC 0 - 50 ºC 0 - 50 ºC
Storage Temperature -40 - 60 ºC -40 - 60 ºC -40 - 60 ºC -20 - 50 ºC -20 - 50 ºC
IPX5
Protected against low pressure water stream from any angle.
IPX7
Withstands incidental exposure to water of up to 1 meter for up to 30 minutes.

Apple Find My

Offering the peace of mind in knowing where your power meter is.

Battery Life

Our impressive long-lasting battery life means you won’t have to worry about frequent battery changes.

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.

Ultra Low Profile

With an ultra low profile design, the PRECISION 3+ is compatible with more bike frames than ever before.

Light Weight

4iiii makes the lightest power meter on the market. We’re committed to helping you get faster, one gram at a time.

Waterproof

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.

3 Year Warranty

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.

Left Right Balance

A dual power meter measures the power from each individual leg to calculate your total power output.

Cycling Metrics

Get more data like pedal smoothness and torque effectiveness to analyze and optimize your pedal stroke.

Dual-Channel ANT+ & Bluetooth Smart

4iiii power meters communicate their measurements over both ANT+ and Bluetooth, letting you read and record your power numbers on an enormous catalog of head units, sport watches, smartphones, and computers.

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