Backlight: easy to read even in dark environments. Four torque units can be converted and automatically calculated. High resolution, large screen, easier to read. With buzzer and LED light alarm function, when the preset value is reached, an alarm is issued at the same time, prompting the operator to pay attention to the change of torque. Battery-operated, no need plug, safe and convenient.It is a prefect tool for bicycles and vehicles.<br><br>Power Supply: 2 x AAA Batteries(included batteries) Alarm Range: 1.5-30Nm Resolution: 0.1Nm Accuracy: +/- 2-3% Automatic shut-down: 70s Teeth: 72T Colour:Black & Blue Material:Steel<br><br>Package Contents: 1 * Digital torque wrench 1 * screwdriver 1 * Packing boxes 1 * English instruction<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.