... (90) Days) which starts with the date of original purchase ("Limited Warrantyperiod"), at its option either(a) repair your product with ... . You must mail-in your productduring the warranty period. This Limited Warranty is extended only to the original purchaser and onlycovers ... receipt or other proof of original purchase date isrequired for Limited Warranty service. HDMI switcher 3*1 ,Full HD 1080P 3D ...