Features: This handheld strength gauge is equipped with a high-precisions strain gauge sensor, which allows you to have an accurate, digital reading of grip force. Measuring capacity: 0 to 396lb/180kg. The large LCD display clearly displays all measurements on the same screen. Readings displayed include user code, ages, gender, grip value in pounds or kilograms, and grip. And the newly improved bright screen function. This popular handheld strength gauge is charged via USB, which is more environmentally friendly, and can be used anywhere. Standard 2xAAA batteries (not included) can also be used. Just turn on the hand force gauge and press start to measure immediately, and press the manual dynamometer with the force for at least 5 seconds. After testing, the LCD display automatically displays the value of the grip force, bar of the grip force is displayed in strong, normal or weak. The grip strength device of the hand dynamometer can store up to 19 user-definable data. Specifications: Material: Alloy Size: Approx. 19.6x13.1cm/7.71x5.15in Measuring range: 0 to 396lbs(180kg) Power Supply: USB Charging Cable+2xAAA Batteries (NOT included) Package Includes: 1x Hand Force Gauge 1x USB Charging Cable note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.