Anonymous2 years ago+330What is the difference between the Braun Series 9 BT9420 and BT9440?Show in original language (German)Anonymous1 year ago000I have compared the pictures and come to the following conclusion:The basic devices are the same. The BT9440 seems to have 2 more attachments (for transitions). Show in original language (German)Commentaleardo2 years ago • purchased this product-101purchased this productGood morning,not knowing Series 9 BT9420 specifically, I cannot answer your question,however compared to other much better performing models csadtShow in original language (Italian)Comment