4iiii PRECISION 3 Power Meter - Shimano 105 R7000 Left Crank Arm - Accurate Cycling Power Measurement for Road Bikes & Training

How do you define success? Whether you are fighting for a Kona slot, spending countless hours on the indoor trainer or striving for a personal best; one thing we know, success takes time. With an industry-leading 800 hours of battery life, +/- 1% accuracy and backed by our legendary 3-year warranty, the PRECISION 3 Powermeter will be your trusted training tool for years to come.