You can find the serial number of your toothbrush at 3 places :
- Behind the box (picture 1) : Below the barcode "Serial : KLTB001-UW-xx-xx-K-xxxxx"
- In the Kolibree App ( picture 2 ) -> menu toothbrush settings -> "Toothbrush ID" : "UWxxxxKxxxxx"
- On the delivery note ( picture 3 )
Picture 1 (Behind the box of the toothbrush )
Picture 2 (Kolibree App iOS : Toothbrush ID)
Picture 3 (Delivery Note)