Feature:1. HIGH ACCURACY TORSION WRENCH: 1/2 inch drive digital torsion wrench, with a buzzing setting range of 20.4340N.m. The accuracy in the clockwise direction is 2%, and the accuracy in the counterclockwise direction is 2.5%2. PRESET VALUE AND DATA STORAGE: The digital torsion wrench has a preset value mode and 100 sets of data storage functions, which can preset and store 6 sets of torsion and angle values.3. BUZZER AND LED INDICATOR: When you approach the target torsion, the wrench will sound a warning, the buzzer will sound a regular beep, and the LED indicator light will change from flashing green to a stable red light.4. MEASUREMENT MODES: This torsion wrench provides 4 real time measurements within the range of Nm, in lb, ft lb. kg cm. In trace mode, you can apply a balancing force by changing the display value. In peak mode, record the generated torsion value.5. LOCKING AND SLEEP MODE: This torsion wrench has a lock mode to avoid accidental contact with numerical values. There is also an automatic sleep mode, which automatically enters sleep mode after 2 minutes when you are not using it.Specification:Item Type: Digital Torsion WrenchMaterial: Stainless Steel, RubberBattery Type: 2 x AA Battery (Not Included)Maximum Operating Range: 340N.mDrive Head: 1/2 inchBuzzer Setting Range: 20.4-340N.mAccuracy: Clockwise: 2%, Counterclockwise: 2.5%Ratchet Head Teeth: 36Number of Buttons: 5Operating Temperature: -10-60Storage Temperature: -20-70Humidity: Up to 90% no condensation.Package List:1 x Digital Torsion Wrench1 x Battery Cover Key1 x User Manual1 x Storage BoxNote:1. The accuracy assurance range is 20 to 100 percent of the maximum operating value, the last digit 1 not counted. Torsion accuracy is the normal value. Calibration accuracy is based on the middle slot of the top 5 slots on the handle. To ensure accuracy, it is recommended to calibrate once a year.2. Life testing includes horizontal and vertical tests3. Once refers to applying force to the wrench from 0N.m to the maximum operating setting of the wrench, and then back to 0N.m.4. Since the digital angle torsion wrench automatically saves the previous historical data, be sure to clear the historical data and reset the new data you want before each use.