The Force is an evolution of the Flex, Fitbits other wristworn tracker, and offers an OLED display and altimeter on top of the features included in the Flex. 회사의 One 트래커와 매우 유사하지만 손목 밴드가 있어 바지에 끼울 필요가 없습니다. What causes Fitbit rash?