The warranty number for the YOYO Babyzen stroller is exclusively found in your “YOYO stroller user guide” delivered with your stroller.
It always starts with “WK” followed by a combination of 13 digits and letters. This number is unique and should be communicated, along with the YOYO’s serial number, to Babyzen’s after-sales service to activate the warranty for the YOYO stroller.