The TAG Heuer Connected Calibre E5 45 mm represents the pinnacle of Swiss watchmaking and digital innovation. This robust smartwatch features a fine-brushed steel case, a black ceramic bezel, exceptional battery life, and a comprehensive suite of connected features, all powered by the TAG Heuer OS, a proprietary user experience and interface developed entirely in-house. Powered by TAG Heuer OSDeveloped entirely in-house, TAG Heuer OS delivers a proprietary interface designed for a fluid, responsive, and intuitive user experiencekeeping you connected and in control. Smart Battery Performance Enjoy up to 3 days of battery life in low power mode. Fast charging provides a full day of use in just 30 minutes. Comprehensive Sensor Suite Includes heart rate, compass, accelerometer, gyroscope, microphone, barometer, Sp O, calorie tracker, step counter, breathing rate, and heart rate variabilityensuring precise tracking across all activities. Pre-Installed TAG Heuer Apps Stay active with TAG