System: Wear OS with Samsung's One UI Watch interface. Sports & Fitness: Tracks workouts, daily activity, steps, and calories. Health: Measures heart rate, monitors sleep, and measures blood oxygen levels. Notifications: Receives phone notifications, messages, and alerts. Calls: Make and receive calls via Bluetooth when connected to a compatible phone. Voice Assistant: Supports compatible voice assistants. Apps: Download compatible apps from the Google Play Store. Navigation: Supports maps and GPS location features. Water and Dust Resistance: Designed to withstand water and dust according to its official rating. Technical Specifications: Quad-core processor, 2GB RAM, and 64GB storage. Battery: 445 mAh capacity, theoretically up to 30 hours with always-on display. Durability: 5ATM water resistance, IP68 rating, and MIL-STD-810H standard. Size: 46 mm. Compatibility: Works with Android 12 or newer phones. Condition: Used Color: Black