This CDI Torque 3/8-Inch drive high accuracy Computer 3 electronic torque wrench is a simple to use digital readout wrench that displays real time torque values in any of four torque units. Set the desired torque value and apply force until the green LED light illuminates. It is great for light industrial, automotive, motorcycle, watercraft, and aircraft applications. It features a sleek new design and a 15 degree flex ratcheting head. There is a push button socket release head and a large, easy to read digital display. It takes lithium ion batteries for a long life and features an ergonomically designed molded non slip rubber grip. This computer wrench remembers the last unit and torque setting selected and the audible tone sounds when set torque value is reached and if exceeded an alarm tone will sound. The torque is 25 to 250 foot pounds.