Training with dumbbells is highly popular, since it builds up muscles and enhances general fitness. In order to be successful, however, any training has to be guided and well structured. The Bowflex SelectTech 560 dumbbells offer a fully interactive experience and feature built-in brains to guide users through exercises. It monitors user performance and constantly sends feedback. The integrated 3DT electronic sensor tracks all movements as well as the actual weight lifted, and while tracking provides an audible cue when users complete each exercise properly. This data can be displayed either on a dumbbell screen or via an app for tablets and smartphones. Furthermore, the 3DT app also features video exercises, allowing users to track individual goals, progress and calories burned. The results achieved can also be shared with friends via Bluetooth technology. These dumbbells merge the experience of intelligent technology with an aesthetic design. They feature a space-saving and ergonomic solution to reduce the number of separate dumbbells from 32 down to only two. The weight can easily be changed and incrementally adjusted from 5 pounds (2.27 kg) to 60 pounds (27.22 kg). Boasting a combination of interactive guidance and sophisticated design, these dumbbells allow for demanding workouts perfectly adjusted to the user.