FEATURES- Static torque measurement- Standard functions: torque setting, measurement setting, mode setting.- Operation in both clockwise and counterclockwise directions.- LCD display shows N-m (or kg-cm, in-lbs., ft-lbs.) measurements.- Audible torque confirmation by means of buzzer.Specifications- Model Number: RM601-3- Head Size: 3/8″- Torque Range: (3.7 to 37 ft-lbs.)- High Accuracy: +/- 2% Clockwise, +/- 3% Counter-Clockwise (from 20% to 100% of max. torque)- Tool Weight: 2.8 lbs. (1.27 kg)- Battery: 4 AAA batteries (Not included)Specifications- Model Number: RM601-4- Head Size: 1/2″- Torque Range: (14.8 to 147.5 ft-lbs.)- Tool Weight: 3.9 lbs. (1.77 kg)- Battery: 4 AAA batteries (Not included)