SERIES10 The Apple Watch Series 10, 46mm size, and the back is inscribed with 46MM Aluminum and Ion-X Glass, so it is the aluminum version and not the titanium. Specifications * Model: Apple Watch Series 10 * Size: 46mm * Material: Aluminum * Display: Retina OLED Always-On * Resolution: 416 &times; 496 * Processor: S10 SiP * Storage: 64GB * Battery: Up to 18 hours, and up to 36 hours in low power mode * Fast Charging: Up to approximately 80% in 30 minutes * Water Resistance: Up to 50 meters * Sensors: Heart rate, ECG, temperature, compass, altitude, motion, and others. Series: Apple Watch Series 10 Color: Black Case Size: 46mm Condition: Used Connectivity: GPS