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 long does it take to install a power meter? DO I HAVE TO TURN THE METER ON/OFF? WHAT DO THE QUANTITIES RECORDED BY THE METER (TE/PS/LR%) MEAN? HOW DOES THE DEVICE WORK? How to connect multiple devices with each other? – Zwift, Smart Trainer, Bicycle computers etc. Which crank will be compatible with my crankset? – list of replacement cranks