Once you've connected either model to your phone or tablet via Bluetooth 4.1, you can use Google Assistant by touching a sensor on the ear cup or earbud. You can then say things like, "volume up," "tell me about my day" or "play some pop music." The over-ear 710GAs have a 25-hour battery, the 310GA boasts a 20-hour battery, and the 110GAs have an 8-hour rating. These aren't the first headphones optimized for Google Assistant, of course. That honor belongs to the Bose QC35 over-ear model.