DHD-3, Auto Mode – Quick performance can be done to save time- The DHD-3 Digital Hand Dynamometer represents the latest electronic technology applied to the familiar design ofhydraulic hand dynamometer.- Utilizing electronic load cell transducers instead of hydraulic fluid mechanisms that are prone to leakage; the DHD-3 isextremely durable and designed to last for many years.- Highly accurate grip strength measurement from 0-200 pounds (lbs.) or from 0-90 kilograms (kg) is digitally displayed on the LCD and up to 20 test results can be stored in memory.- The built-in battery is long lasting and is easily recharged when connected to a PC using the USB cable included with the DHD-3.- SH1003 DHD-3 Digital Hand Dynamometer in Carrying Case.The DHD-3 Digital Hand Dynamometer provides the same features as the DHD-1 when used as a stand-alone device, but adds automated Rapid Exchange Grip Testing. Using Auto Mode, up to 10 test strength tests for each hand as well as the time allowed to switch hands can be configured to automate the testing procedure.