Use the included charging cable with the Moto Watch 100 to charge it.

You can connect the USB-A side to a computer or wall plug. Connect the other end to the back of your Moto Watch. Magnets will align the cable in the correct orientation, with the cable end facing upwards.

If the watch has enough power, it will turn on and vibrate, showing the charging level. Otherwise, it may take 30 minutes to charge enough to turn on..