Medical-Grade Precision Chips: Deliver ultra-fast and highly accurate blood oxygen measurements, ensuring clinical-level reliability for daily health monitoring. Ergonomic Silicone Pad: Redesigned air-cushioned silicone contact surface conforms to finger contours, providing a softer, more comfortable fit during extended use. 20-Day Trend Tracking: Store up to 20 sets of measurement data, enabling you to easily review long-term blood oxygen level trends and identify potential health patterns. Adaptive Brightness Control: 5 adjustable brightness levels optimize screen visibility, ensuring clear readings in any environment—whether bright outdoor sunlight or dim indoor settings. Customizable Smart Alerts: Set personalized oxygen level thresholds to trigger instant alarms, keeping you proactive about critical changes in your blood oxygen status. This equipment is for sports and aviation use only, not medical equipment