USED Used for less than a month. Reason for selling: watch size compared to my wrist. - Battery lasts up to 21 days of actual use (depending on usage pattern) - 1.43-inch high-resolution AMOLED screen - Over 100 sports modes - 24-hour heart rate monitoring - Sleep tracking with stage analysis (light/deep/REM) - Water resistance up to 5ATM - Lightweight, approximately 50 grams If health is important to you, the GT 6 Pro isn't limited to just heart rate—it provides a range of additional vital measurements with clear numbers: - Blood Oxygen Saturation (SpO2): Instant measurement + periodic monitoring, important during exercise or stress. - Stress Level: Analysis based on Heart Rate Variability (HRV) with alerts when it rises. - Respiration Rate: Monitoring during rest and sleep. - Advanced Sleep Analysis: Sleep duration + stages (deep/light/REM) + number of awakenings. - Skin Temperature: Tracking daily changes (useful as a general indicator, not diagnostic). - Daily Activity: Steps, calories, active minutes, with customizable numerical goals. - VO2 Max (Cardiorespiratory Fitness): Estimating oxygen consumption efficiency during exercise. - Recovery Time After Exercise: Direct recommendation after each activity. - Menstrual Cycle Tracking (for women): Predictions and alerts. In summary: Multiple health data presented simply and understandably, helping you monitor your daily patterns and make better decisions—but they remain indicators, not medical diagnostic tools. If these specifications suit your daily use, it's a practical choice. Condition: Used