Track your fitness goals and monitor your sleep patterns with the Fitbit Flex Wireless Activity and Sleep Tracker FB401. This unisex activity tracker is perfect for gym and training, walking, running, swimming, yoga, pilates, and other fitness activities. It is equipped with wireless and sleep tracker features, and sensors such as an accelerometer for accurate measurements of calories burned and distance traveled. The Fitbit Flex also comes with a mobile app that is compatible with iOS and Android operating systems, and it has a battery life of up to 3 days. The tracker is made of plastic material and has a mixed color design that is suitable for both indoor and outdoor activities. It comes in a display size that is easy to read, and it supports multiple languages including English, Italian, French, German, and Spanish. Purchase this activity tracker today and take a step towards a healthier lifestyle!