The hand dynamometer delivers accurate real-time readings with a precision sensor, ideal for monitoring your grip strength gains over time. Features: Features a highly sensitive strain gauge sensor and a bright LCD screen for clear readings. Large, easy-to-press buttons for simple operation. Measures up to 180kg of grip strength. Memory storage allows you to track records and automatically displays the incremental change compared to the previous test for easy comparison. Includes a grip counting function for tracking performance. Ergonomically designed handle based on bionic principles, ensuring a comfortable grip. Adjustable handle to accommodate different age groups. Equipped with a built-in 300mAh lithium battery that fully charges in about 2 hours, providing approximately 24 hours of use. Can also be powered by two AAA batteries (not included). Specification: Material: ABS Color: Black Battery Type: 1 x 300mAh Lithium Battery or 2 AAA Battery(not included) Power Supply Method: USB Charging Cable Power Supply ( Power Adaptor Not Included ) Size(LxW): 12.5 x 19.5 cm Package Content: 1 x Grip Strength Dynamometer 1 x USB Cable 1 x Manual Please Note: Due to manual measurement, there might be a tolerance in the product size. Due to the lighting effects and shooting angles, the color of the item and that shown in the picture might have a nuance.