The language you select in the Bang & Olufsen app will help enhance Alexa’s ability to recognise the keyword ‘Alexa’. However, Alexa’s reply will be based on the language set in the Alexa app. If the Alexa app supports the language setting of the smartphone or tablet, the reply will be in this language, but if the Alexa app does not support the language setting of the smartphone or tablet, the reply will be in English.