ACDelco ARM329-4I 1/2" Interchangeable Digital Torque Wrench performs torque range of 14.8-147.5 ft-lb. or 20 - 200 Nm, 30 memory settings, 2 LEDs flashing alert (green & red), allows operating at 14 F degree to 140 F degree. LCD backlight display that shows reached torque, battery life, measurement mode. Static torque measurement. Standard functions: torque setting, measurement setting, mode setting. Operation in both clockwise and counter-clockwise directions, accuracy CW +-2%; CCW +- 3%. LCD display shows N-m (or kg-cm, in-lb., ft-lb.) measurements. LED flashing & vibration/buzzer alarm when under torque or overload. Battery type: 2 x AA (not included). Tool weight: 2.98 lb. Overall length: 22" or 559 mm.