I'm interested in purchasing the Sennheiser HD 660S2 headphones. Can you tell me their primary use case, what type of ear coupling they have, and their nominal impedance? Also, please find the direct link to the product's user manual (notice d'utilisation) and state the file size of the manual.
Navigate to 'fr-fr.sennheiser.com'. If a cookie consent banner appears, click the 'Accepter tout' (Accept all) or equivalent button to dismiss it. Use the search functionality or directly navigate to the product page for 'HD 660S2'. (e.g., by searching for 'HD 660S2' or using a guessed URL like 'https://www.sennheiser.com/fr-fr/catalog/headphones/hifi-headphones/hd-660s2'). On the product page, locate and extract the primary use case for the HD 660S2 headphones. Identify the ear coupling type (e.g., 'Circum-aural'). Find the nominal impedance of the headphones. Navigate to the 'Téléchargements' (Downloads) or 'Support' section on the product page. Locate the 'notice d'utilisation' (user manual) for the HD 660S2 headphones. Extract the direct download link for the user manual. Determine the file size of the user manual from the information provided on the page. Synthesize all gathered information into a concise answer.
The agent successfully navigates to the HD 660S2 product page. The agent accurately states the primary use case for the HD 660S2 headphones as 'écoute analytique et relaxante' (analytical and relaxed listening) or similar. The agent correctly identifies the ear coupling as 'Circum-aural' (Over-ear). The agent correctly states the nominal impedance as '300 Ω'. The agent provides the direct download link for the user manual (e.g., 'https://assets.sennheiser.com/global/assets/40000000000/40000000000_10000000000_FR_HD_660S2_Manual_V1_0_0_2023_02.pdf'). The agent correctly states the file size of the user manual as '2,92 MB' or '2.92 MB'.