4iiii Shimano FC-R8100 Precision 3+ PRO DUAL cranks with wattmeter, 52/36T, 2x12
4iiii Shimano FC-R8100 Precision 3+ PRO DUAL cranks with power meter
The 4iiii Precision 3+ power meter is the result of the development and experience of the leader in crank wattage measurement. It is the only cycling product on the market that offers native integration with Apple's Find My technology.Precision 3+ offers everything you expect from a modern power meter – reliable measurement, long battery life, easy management via a smart app. Precision 3+ is compatible with all commonly used cycling computers supporting the ANT+ protocol (Garmin, Wahoo, Bryton, Lezyne,...).
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Integrated accelerometer for measuring cadence (pace)
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Wireless firmware updates via Bluetooth Smart interface
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Innovative housing made of highly chemically resistant plastics
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Weight: only 9 g on the left crank and 12 g on the right crank - the lightest mass-produced power meter
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Easy battery replacement without tools - anyone can do it without a visit to a service center
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| Groupset | Shimano Ultegra |
| Gears | 2x12 |
| Crank length | 165 mm, 170 mm, 172.5 mm, 175 mm |
| Groupset | Shimano Ultegra |
| Accuracy | 99 % |
| Weight | only 9 g on the left and 12 g on the right crank (compared to Shimano Ultegra FC-R8100) |
| Crank length | 165 mm, 170 mm, 172.5 mm, 175 mm |
| Battery life | (CR2032): up to 550 hours depending on ambient temperature |
| Cadence measurement | 30-220 revs |
| Water resistance | IPX7 |
| Connectivity | ANT+, Bluetooth 5.0 |
| Converters | 52/36T |
| product ID | 331735 |
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