The Fitbit Versa 4 Activity Tracker Smartwatch in Rose Gold is a stylish and functional fitness technology device designed for indoor and outdoor activities. This smartwatch offers a variety of measurements including heart rate, speed, cadence, time, resistance level, distance, calories, and watts. It has a battery life of up to 7 days and is compatible with both iOS and Android operating systems. The device features Bluetooth connectivity, alarm, clock, calorie monitor, water resistance, and average heart rate tracking. With its sleek design, durable aluminum material, and advanced sensors such as SpO2, Radar, Accelerometer, GPS, and Ambient Light, the Fitbit Versa 4 is a versatile activity tracker suitable for gym training, weightlifting, swimming, yoga, and running.