DigiFlex hand exerciser develops isolated finger strength, flexibility, and coordination as it builds hand and forearm strength. You can use the buttons individually to exercise fingers or the entire unit for complete hand and forearm exercise. Rubber base is contoured to fit snugly at the base of your palm for longer and more controlled workouts.

Comes with illustrated manual.

Resistance levels:

Red = 1,4kg

Green = 2,3kg

Blue = 3,2kg