You can find the serial number on the Registration Form included with the User Manual, on a small barcode sticker. The serial number starts with a letter and is followed by a string of numbers.* If you have more then one product to register please separate the serial numbers with a comma. do not add any additional spaces. Example: G12345689,G987654321.
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* Cardo Systems Inc. will use your contact details only for its intended purpose and will not share your data with third parties without your prior consent.