Meet the google pixel watch 2 (wi-fi), engineered by google with the best of fitbit. Understand your health and fitness with fitbit’s most accurate heart rate tracking. See the best of google at a glance, including gmail and calendar, and get peace of mind from personal safety features. And keep going with even longer battery life. Works with most phones running on android 9. 0 or newer. With google assistant, just say "hey google" to discover stats related to your health and fitness – using your voice. Features 320 ppi amoled display with dci-p3 color new sensors for heart rate tracking, skin temperature, and stress management with fitbit’s body-response feature, get help identifying potential signs of stress a built-in sensor tracks temperature variations that may be related to your sleep environment go even longer with 24 hours on a single charge and always-on display. Auto workout mode automatically starts and stops your activities