Range: 40-200 N-m (29.5-147.5 ft/lb). Accuracy: +-2%. Memory: 50. Target value setting: Peak and trace mode. Unit: Kg-m, Kg-cm, lb-in, N-m. Auto shut off: 80 seconds. Alarm: Buzzer &Led. Battery: CR2032 (1 pc). Use as a calibration device for existing torque wrenches digital and analog. 3 color LED light indicator and progressive audio notification when reaching specified torque. Convert any ratchet into a torque wrench.