Description: 【Compact and Portable Design】: This silicone grip strengthener features a finger separation design that prevents slipping and fits comfortably in your palm, making it easy to carry and use anywhere 【Premium Material】: Made from quality silicone, this grip strength training offers a comfortable, soft, and delicate touch that is gentle on the skin while providing an excellent grip experience 【Function】: Finger Stretcher is designed to strengthen finger strength and improve its flexibility, providing effective exercise for your hands 【Automatic Counting Feature】: Equipped with a touch sensitive button for counting repetitions automatically, helping you track your progress effortlessly during each workout 【Versatile Use for Various Groups】: Ideal for office workers, musicians, and fitness enthusiasts looking to enhance their hand strength, and more Specification: Material: Silicone, Battery Capacity: 150mAh Size Chart: 10.3cmx10.5cmx2cm/4.06inchx4.13inchx0.79inch Package Includes: 1 Hand Grip Strengthener, 1 Type C Cable Note: Please allow slightly errors 1-2cm/0.39inch-0.79inch differences due to manual measurement.