This digital torque wrench is small in size, but ma many functions as well, such as a large do reading screen, four different do exchange units, a buzzer and two LED alarm functions. If you need it, come and try it, it will not disappoint you. With large digital display and black light function, you can read the number more clearly for better user experience. Four unit change function: you can change units from Nm, kgf.centymetr, lbf. ft, lbf. in according to your needs. With the buzzer and LED diode in two ways, in peak mode, it will alert you when it reaches 80% of the predetermined torque value. It can be operated clockwise and opposite do clockwise, clockwise 2% and opposite do clockwise 2,5%, accuracy (20-100% full scale). Automatic shutdown: This key will turn off automatically without operation for 3 minutes. Specifications: Material: metal plastic Minimum breakdown value: 0,01 Connection: 1/2 Buzzer settings ranges: 3100 Wrench length: 290 mm Accuracy: right: 2% Left: 2,5% Units: Nm, kgf.centimeter, lbf. ft, lbf. in Rattle tooth: 72 teeth Operating Temperature: -10 60 Package Weight: 1150 g / 2,5 lb Packing list: 1 * digital key 1 * User Manual