The Fitbit Sense 2 Fitness Smart Watch FB521 in Soft Gold/Blue Mist is a versatile and sleek device designed for fitness enthusiasts. With a battery life of up to 6 days, this unisex activity tracker features a range of sensors including SpO2, accelerometer, GPS, and ambient light. Its wrist-worn design is suitable for indoor and outdoor activities, making it ideal for gym training and running. The watch also boasts a heart rate monitor and a display size of 28.38 mm, perfect for tracking your fitness goals in style.