PRECISION (coin battery specification) and Podiiiiium (rechargeable) power meter left crank pro team Israel Start-Up Nation adopts 4iiii crank. Battery operated The 4iiii power sensor is also equipped with a cadence sensor. The 4iiii power sensor has an effective temperature compensation function, so please calibrate the crank every time at the 12:6:00. If your bike is stored at a different temperature from the location of the road, please adjust it to the running temperature for 5-10 minutes before calibration.