Garmin Vivosmart - Black Bundle (Large) (Includes Heart Rate Monitor) SENSOR COMPATIBILITY: Pairs with heart rate monitor chest strap, bike speed sensor or VIRB Elite action camera for fitness activities (chest strap included in bundle package). SMART NOTIFICATIONS: Monitor calls, texts, meetings, emails and other notifications with vibration alerts so you don't miss a beat SLEEK TOUCHSCREEN BAND: Double tap to reveal the hidden OLED touchscreen and swipe to navigate pages VIBRATION ALERTS: vivosmart lets you know when you have calls, texts, emails, meetings, or if you just need to walk, with a vibration alert. AUTO SYNC: vivosmart automatically syncs with mobile devices at strategic times throughout the day, such as when a goal is met or when several steps have been taken since the last sync. NOTE: Heart rate monitor is not built in, you have to wear the chest strap to monitor heart rate.Please refer the User Manual before use.