In the event that an i-PRO Americas Inc product has a defect in material or workmanship, i-PRO will exchange or repair the non-functioning unit with a new or functioning refurbished product, free of charge, provided the failure occurs within the standard or extended warranty period (determined from the original date of purchase on an invoice or purchase receipt) If no proof-of-purchase is available, the date of manufacture will be determined from the model and serial number of the unit).