Compatible OS: Supports Bluetooth 4.0 and above, iOS 10.0 or above, and Android 5.0 or later versions. *We cannot guarantee that it will work with all Android devices
[Warranty period] 1 year from date of purchase
[Continuous working time] Up to 5 days (varies depending on your environment. )
[Water Resistant] Water resistant up to 164.4 ft (50 m)
[Sleep Stage Function] Automatically measures the time and time of each sleep stage (awakening, shallow sleep, deep sleep, rem sleep)
[Notification Function] Displays and vibrates notifications from various applications such as incoming calls, text messages, calendars, Facebook, Line, Twitter, etc. (Android only)
Women's Body Conditioning: Use the Fitbit dedicated app to record menstrual cycle and physiological conditions, and ovulation days
Record activity & heart rate: Automatically records steps, distance, calories burned, active time, hourly activity, heart rate just by wearing it. Diet and train effectively
[Size] Wrist circumference: 7.1 - 8.7 inches (180 - 220 mm) (Large) / 5.5 - 7.1 inches (140 - 180 mm)
[Package Contents] Inspire HR tracker, classic wristband (L/Small), charging cable *Wireless USB dongle not included