ACDelco ARM601-3 3/8" Digital Torque Wrench (2 to 37 ft-lbs.), with Buzzer & LED Flash Notification - ISO 6789 Standards with Certificate of Calibration [Advanced Technology]: 2 to 37 foot pounds torque range with LED flashing/ buzzer alarm when torque is reached. Easy to read LCD display with measurements (kg-cm, N-m, in-lb. ft-lb) [Multiple Setting Functions]: Torque, Measurement, and, Peak & Trace, Mode Settings. (Torque setting range: 10% of max torque value. Measuring range: 2 to 37 ft-lbs.) [Guaranteed Accuracy Range]:  2% clockwise  3% CCW of indicated value, CW, from 20% to 100% of full scale. [Quality Assurance]: Meets or exceeds ASME B107.14-2004, ISO 6789 standards, individually serialized with matching certificate of calibration traceable to N.I.S.T. [1 Year ACDelco Tools Limited Warranty]: One-year limited manufacturer's warranty against defects in materials and workman ship Standard functions: torque setting, measurement setting, mode setting.