FEATURES
- Left side crank arm with built-in 4iii power meter
- +/-1.0% accuracy for collecting reliable training data
- Super lightweight to make for one of the lightest on the market
- Replaceable CR2032 battery for up to 800 hours of battery life
- Pair to the 4iii app with ANT+ and Bluetooth SMART to transfer data
- 5.5mm design accommodates tight tolerances between crank and chainstay
- Item #FII0007
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