The Fitbit Versa 4 Fitness Smartwatch case in graphite and black is a sleek and durable accessory designed for both indoor and outdoor activities. With a high-resolution display of 1920 x 1080, this smartwatch offers a variety of measurements such as heart rate, speed, distance, and more. The watch runs on batteries and has a battery life of up to 7 days. It also includes features like a clock and sensors for radar, GPS, and ambient light. Perfect for those who are into fitness activities like gym training, running, swimming, yoga, or weightlifting, the Fitbit Versa 4 smartwatch is a versatile and reliable tool for tracking and improving your fitness levels.