Where can I find my Joolz Geo serial number? The Joolz Geo serial number starts with GCH, you can find it above the rear wheel. Related articles Where can I find the serial number of the Joolz Geo²? Where can I find the serial number of the Joolz Day? Where can I find the serial number of the Joolz Hub? Are accessories covered by life time warranty? Where can I find the serial number of the Joolz Day+?