?Smart Counting Grip Strengthener?Add counting function, this hand strengthener could help the exerciser record training progress and training results with counting number. Just Press the button firmly to count automatically. Gently rotate button to clear units digital, push and rotate button to clear tens digitals., The forearm strengthener from 11lbs to 132lbs, The finger stretcher with 3 resistance levels(13lbs,17lbs,21lbs), Durable and Ergonomic Design Suitable for your hand & fingers work habits Physical Therapy and Rehabilitation Equipment: Prefect for rheumatoid Arthritis, stroke rehab, carpal tunnel, tenosynovitis, fractured, broken wrist, tendon surgery, tennis elbow, reduce stiffness and pain Athletes and Musical Instruments: The grip strength trainer kit is perfect for improving power and flexibility in the wrists, fingers, and forearms. PERFECT GIFTS for Rock Climbers, Tennis players, Guitar, Piano, Drummers & Musicians