This UP 24 by Jawbone activity tracker is the perfect accessory for fitness enthusiasts. The sleek black wristband design is perfect for attaching to your wrist, and the small size makes it unobtrusive. This unit is ideal for tracking your fitness activities, and it comes equipped with a variety of features to help you do so. The Jawbone UP 24 is a unit that is perfect for those who are always on the go. It is a great addition to your fitness routine, and it is perfect for tracking your daily activities. This activity tracker is ideal for those who are looking to stay fit and healthy, and it is a great way to track your progress.