1.Helps improve muscle tone and sculpt your arms, shoulders, back, leg, chest, abdominal 2.Fit for physiotherapy exercises. 3.Using a unique dial system,automatically adjust the weight of dumbbell 4.Lets you rapidly switch from one weight exercise to the next 5.Perfect addition to aerobics and step workouts 6.Non-slip handle designed to fit comfortably in palm of hands 7.Eliminates the need for multiple dumbbells cluttering your workout space