This watch face is an Analog WatchFace.The WatchFace has a battery, and a heartrate measurement.This watch face corresponds to the SamWatch Dodu lineup.*This item contains Support Application for smartphones.*Support Wear OS Device*The heart rate data is not interlocked with other apps, and when you click the measurement button on the watchface, it is measured.Galaxy Watch Cafe : http://cafe.naver.com/facebotFaceBook Page : www.facebook.com/SamtreePageTelegram : https://t.me/SamWatch_SamThemeYoutube : https://www.youtube.com/channel/UCobv0SerfG6C5flEngr_JowBlog : https://samtreehome.blogspot.com/Korean Blog : https://samtree.tistory.com/