Stetten is a German surname, and its spelling is unique because it contains two letters that exist only in the German language: "ß" and "t". The "ß" is called an "Eszett," and it represents a double "s" sound. The "t" after the "Eszett" denotes a separate syllable, making the name pronounced "Shtet-tin" /ʃtɛtən/. This combination of letters is not typically found in English, making it challenging for non-native speakers to spell or pronounce correctly. However, understanding the IPA phonetic transcription can help with proper pronunciation.