2.1 Product serial number
Product serial number is the product's unique identifier for product quality tracking, after sales
service, insurance claim, loss confirmation and so on. please make sure the serial number be
recorded and saved. You can obtain the serial number of the product from the following
position: the product packaging, the product warranty card, the body of the TR800 electric bike
(the side of the control box).
2.2 Product picture
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