Operating system Tizen Memory storage capacity 2 GB Special features 50m water resistant (IP68), Blood pressure monitor, Bluetooth Enabled, ECG certified, MIL-STD-810H compliant, Sleep Tracking50m water resistant (IP68), Blood pressure monitor, Bluetooth Enabled, ECG certified, MIL-STD-810H compliant, Sleep Tracking Connectivity technology Bluetooth Wireless communication standard Bluetooth About this item Charger Included, 1.34" Super AMOLED Display (438x438px), 3000 nits Peak Brightness, Sapphire Crystal Protection, Stainless Steel Frame, Rotating Bezel, Quick Button 64GB, 2GB RAM, Exynos W1000 (3nm), Penta-core, Mali-G68 GPU, Android Wear OS 6, One UI Watch 8, 445mAh Battery, Bluetooth 5.3 IP68 Water Resistant (up to 50m), MIL-STD-810H Compliant, ECG, Blood Pressure Monitor, SpO2, Heart Rate, Temperature (skin), and Antioxidant Index Advanced Sleep Tracking & Coaching, Galaxy AI for intelligent health summaries, Energy Score insights, and real-time workout coaching International Model - No Warranty. Bluetooth Version: Wi-Fi + GPS Only. Compatible with Android devices Only. Supports Samsung Pay. (Important: Country selection may not be available during setup. Select Any, as Country will updated later after Connecting to WIFI in Settings.)