The FITBIT Versa 2 Smart Watch Face (FB507) is a unisex activity tracker that operates on iOS and Android systems. It has a 1.34-inch display and is made of aluminum and silicone. The watch measures heart rate and time, and has an average battery life of up to 6 days. It is equipped with infrared, SpO2, accelerometer, optical bio-tracking, and ambient light sensors. The watch is suitable for indoor and outdoor activities such as gym training and running.