4iiii Precision Shimano 105 5800 Power Meter
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4iiii Precision 105 5800 Power Meter
The 4iiii Precision Power Meter for Shimano 105 5800 cranks is a pre-installed power meter on a Shimano 105 left hand crank arm. This allows you to simply replace your left hand crank arm and you're ready to ride. Available in Black or Silver with a choice of 170mm, 172.5mm or 175mm crank arm lengths. Precision is the worlds lightest left side power meter, designed provide you with industry leading power accuracy with highly dependable cadence data, a light weight design, broad ANT+ and bluetooth smart head unit compatibility and 3D power meter technology capable of measuring tri-axial strain on your crank. Compatibility ANT+ and Bluetooth Smart head units along with Smartphones. Easy set-up and maintenance. Improved battery life and Battery status indicator (notification at 15% battery) Accurate, consistent data (+ / - 1% error)User-friendly 4iiii app. User configurable Rider Compensation Factor. Improvements to saving zero offset and calibration values. Over-the-air upgrade capability for adding new features and updates. Weight is 9 grams on left crank Uses a 2032 coin cell battery (100+ hours battery life).