BLACK Case Type: Lightweight and durable aluminum in Black/Space Gray. Processor: S6 dual-core chip. Storage Capacity: 32 GB. Display: Retina display with Always-On feature that doesn't turn off, and features high brightness under the sun. Advanced Health Features: Blood oxygen measurement (SpO2). ECG app. Sleep monitoring. Safety Features: Supports Fall Detection and SOS emergency. Water Resistance: Water-resistant up to 50 meters (suitable for swimming and showering). Color: Black Series: Apple Watch Series 6 Condition: Used Case Size: 44mm Connectivity: GPS