A:AnswerYes, you can answer your phone using the SoundLink Micro Waterproof Bluetooth speaker using the multifunction button. If you have any more questions feel free to reach out to us via one of our Support Lines : https://www.bose.com/en_us/contact_us.html Rae - Bose Support
A:AnswerWhile Bose is silent on wattage we can surmise from the excellent 20 watt soundlink flex that being double the size the max will be in the 30-50 watts range which is exceptional for this size speaker not to mention it promises amazing bass and full big speaker sound