HUAWEI WATCH GT 4 Smartwatch Up to 14 Days Battery Life - Compatible with iOS and Android - Heart Rate Monitoring - Sports Watch, SpO2, and GPS - 46MM Black Up to 2 Weeks Battery Life: The HUAWEI WATCH GT 4 46mm boasts an impressive battery life of up to 14 days on a full charge, and up to 8 days of battery life with typical usage. Dual-Band GNSS Positioning with Five Systems: A smart satellite antenna increases GNSS signal accuracy by 30% on the HUAWEI WATCH GT 4 46mm, allowing you to stay on track in avenues, parks, or residential areas. With intelligent positioning fusion algorithms, the watch becomes increasingly accurate as you run. Calorie Management at Your Fingertips: The new Stay Fit app supported by HUAWEI TruSeen 5.5+ helps you track the number of calories you consume at a glance, with high-level measurements such as real-time caloric intake, active calories, resting calories, and caloric deficit. Enhanced 24/7 Health Monitoring: HUAWEI TruSeen 5.5+ updated with heart rate monitoring, scientific sleep monitoring, sleep breathing awareness, and intelligent cycle tracking. Smart Daily Assistant: Brand new UX design, watch face customization, Bluetooth calls, calendar reminders, quick SMS replies. Wide Compatibility: The HUAWEI WATCH GT 4 is compatible with iOS and Android for greater ease of use.