Smart Watch

Samsung watch 4 classic Display Super AMOLED touchscreen Screen size 1.2 inches (42 mm) or 1.4 inches (46 mm) Resolution 396 × 396 (42 mm) Processor Exynos W920 dual-core, 1.18 GHz RAM 1.5 GB Internal storage 16 GB Operating system Wear OS powered by Samsung Connectivity Bluetooth 5.0, Wi-Fi, GPS, NFC Calling Bluetooth calling; LTE calling on LTE variants with supported service Health sensors Heart rate, ECG, body composition, blood oxygen, accelerometer, gyroscope and barometer Fitness tracking Steps, workouts, calories, sleep and heart rate Water resistance 5 ATM, IP68 Durability standard MIL-STD-810G Charging Wireless charging Strap material Appears to be black rubber-like synthetic material Compatibility Android phones; not compatible with iPhones NFC enabled. Comes with a charger.