inconsistency in the Braun codes

No complaints about the shipment and the intrinsic quality of the product. By cons, Braun could avoid immersing guests in perplexity abyss with inconsistent series of codifications (and 'advisers' specialty stores, Darty style!): Why call it "Series 3" razor grid recharges "4000 Series" (here a 4775) ?? Fortunately at the bottom of the package, a note in small print indicates compatibility recharge and kudos to Amazon that provides on its website a reading glass to decipher the note. By cons, counselors specialty stores have not been informed of this 'curiosity' own coding to Braun!