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4iiii Precision 3+ left crank with wattmeter, Shimano XT M8100

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4,6/5
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4iiii Precision 3+ left crank with wattmeter

The 4iiii Precision 3+ power meter is the result of the development and experience of the leader in the field of crank watt meters. It is the only cycling product on the market that offers native integration with Apple Find My technology.

Precision 3+ has everything you expect from a modern power meter - measurement reliability, long battery life and simple management via a smart app. Precision 3+ is compatible with all commonly used cycle computers supporting the ANT+ protocol (Garmin, Wahoo, Bryton, Lezyne,...).

Product features

The lightest mass-produced wattmeter
Simple battery replacement without tools
Wireless firmware updates via Bluetooth Smart interface
Integrated accelerometer for measuring cadence (pace)
Innovative housing made of highly chemically resistant plastics (more resistant when washing)

Product details

Battery CR2032 (lifetime 500-800 hours)
Weight + 9 g on the left crank compared to the version without a wattmeter
Scope of term 30-220 revs
Dimensions 63.79 x 26.42 x 5.5 mm
Connectivity ANT+, Bluetooth 5.0
Water resistance IPX 7
Performance range measurement 0-4000 W
Temperature range 0 - 50 °C (accuracy guaranteed in this range)
Accuracy 99 %
product ID 234448

Rating 4,6/5

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This Canadian brand is primarily known for its powermeters that could be seen on the World Tour. Their offer also includes heart rate sensors and a smart bike hometrainer. Their prices are reasonable. By the way, you are supposed to read their name as "Four Eyes".

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