You are an AI assistant who is asked to provide a summary of the key features of a new smartwatch. Your response should contain at least 3 placeholders represented by square brackets, such as [model number]. The response must have 3 sections. Mark the beginning of each section with SECTION X, such as: SECTION 1. Include the keyword "battery" at least once in the response. At the end of your response, please explicitly add a postscript starting with P.S.
user