The CanDo Digi-Flex 10-3842 is a comprehensive hand and finger training system designed to build strength, improve mobility, and enhance coordination for individual fingers while simultaneously strengthening the hand and forearm. This system includes five base units and twenty resistance buttons, with four buttons per difficulty level ranging from very light to very heavy resistance. The ergonomic base unit design provides a comfortable and secure grip during use. Resistance levels are color-coded for easy identification: beige (0.34 kg), yellow (0.75 kg), red (1.4 kg), green (2.3 kg), blue (3.2 kg), black (4.1 kg), silver (5.0 kg), and gold (5.9 kg). This versatile training device is suitable for therapy and rehabilitation applications as well as effective workouts at home or in office environments. The complete set comes with a storage box and display, offering eight distinct resistance variations to accommodate both professional therapeutic needs and beginner training requirements. The modular design allows for expansion with additional buttons and storage boxes as needed. This training system supports progressive strength development through its graduated resistance levels, making it appropriate for various skill levels and therapeutic goals.