Design and Screen: Ultra-clear 1.43-inch AMOLED display (for 46mm version), with a luxurious titanium or ceramic body and scratch-resistant sapphire glass. Health Features: Supports Electrocardiogram (ECG), Blood Oxygen (SpO2) measurement, and 24/7 monitoring of heart rate and sleep patterns. Battery Life: Battery lasts up to 14 days for normal use in the 46mm version, and up to 7 days for intensive use. Sports and Water Resistance: Supports over 100 sports modes with IP68 and 5ATM water and dust resistance, and supports free diving up to 30 meters. Condition: Used