Using electronic load cell transducers instead of hydraulic mechanisms that are prone to leakage, the DHD-3 is extremely durable and designed to last for many years. Highly accurate gripping strength measurement from 0-200 pounds (lbs.) Or from 0-90 kilograms (kg) is displayed on the LCD display. Up to 20 test results for each hand can be saved in memory for manual tests, and up to 10 test results for each hand can be saved in memory for automated tests. The built-in rechargeable battery is durable and recharges easily when connected to a computer using the USB cable that came with the DHD-3. DHD-3 has four operating modes: Setup Mode, Test Mode, Reading Mode and Auto Mode. The buttons perform different functions depending on the current operating mode. The handle is adjustable in five ranges, which allows you to adjust the device to each hand, regardless of its size. Dynamometer comes with a hard case for transport and storage.