Where can I find serial number and ANT+ ID? The numbers are given: On the silver sticker on the crank arm. On the silver sticker on the power meter box. On the black business card attached inside the device package. Tagged: ant+ ids/nserial number Related Articles How to connect multiple devices with each other? – Zwift, Smart Trainer, Bicycle computers etc. How to install and start the device? How to connect the POWERCRANK with my bike computer? How to perform calibration? How often do I need to perform calibration on my device? Is the zero-offset calibration the same in the app as in the cycling computer?