1.1 Grip strength tester measures the gripping force precisely and accurately up to 120 kg, enabling objective strength assessment and progress tracking. 2. When the automatic belt counting function is turned on and reset to zero, press and hold it for 3 to 5 seconds; the count will be displayed and the counting function will start flashing. To finish, press and hold for 3 to 5 seconds. 3.2 The device is user friendly with a simple display and adjustable handles for different hand sizes. 4. Buttons are clear and can be used by men, women and children, with small size, large effect and wide range of applications. Use scenarios: - Fitness training to monitor and improve grip strength over time. - Hand or forearm rehabilitation to track recovery progress after injury. - Clinics, gyms and home use for quick grip strength assessment across different ages.