Description, Sizing and Details Featuring multi-sport tracking mode and sleep monitoring function, these watches are compatible with Android and i - OSHighlights Steps, calories and distance count Heart rate monitoring Sleep monitoring Sedentary alert Remote music Rectangle dial Alarm clock - Charging cable included Watch menu language: EnglishSpecifactionOLED screen - Bluetooth version: 4.0Compatible OS: Android 4.4 and above/i - OS 9 and above