The product package,charging case,earbuds’inside are printed the unique four-in-one code designed by FiiTii,
which can record different types of information.In FiiTii interior OS,the unique code is used to register
the sale information of the specific piece of FiiTii product and inspect all after-sale components.
*Attention : this code can only be used by FiiTii related department to track its routine for better customer service.