General Specifications: Colour Display Yes NFC Yes Heart Rate Sensor Electrical heart sensor Included Accessories Quick Guide, Wireless Charger Interchangeable Strap Yes Sleep Tracking Yes Water Resistance IP68 Water Resistance Display Specifications: Display Technology Super AmoLED Screen Size 1.31-inch Touch Screen Yes System Requirements: Operating System Compatibility Android Boxed / Shipping Dimensions Gross Weight 0.18kg Height 3.1cm Length / Depth 6.05cm Net Weight 0.05kg Width 28.2cm Storage Specifications: Storage Capacity 32GB Battery Specifications Wireless Charging Yes Technology Connection Interface Bluetooth Dedicated Device App Samsung Health App