Feature●(Recording Modes can be changed) It can record 3 data, calories, time or quantities, and can be adjusted to suit your needs. Also, please note that it will automatically shut off after 30 minutes of use●Hand Strengthening: This device is useful for training joints that allow for smooth movement, not only strengthening your grip strength, but also improving the strength and speed of your wrists, fingers, and forearms●Product Specifications: Size: 5.5 x 4.2 x 1.3 inches (14 x 10.8 x 3.2 cm). Small and lightweight as a portable device. Can be used in various places such as home, office, yoga classroom, gym, etc.●Range of Applications: This training equipment is suitable for sportsmen, rock climbing fans, athletics, tennis players, golfers, etc●(Comfortable to Use) Ergonomically designed to prevent slippage at the same time, you do not have to worry about damage to your hands even after a long period of time. It is longer than a regular item with handles, so you can feel comfortable when usingDescription Hand Grip, Grip Counter Calculation, Grip Strength Measurement, Grip Strength, Training, Record Counter Included