Features: The high-quality ABS plastics are used, which are tough and strong; The buttons on the board are simple and uncomplicated, respectively, the reset button, the save button, the option button and the switch key, and the timing is accurate to 0.001 seconds; The humanized sensor board design on both sides of the palm ensures sensitivity, accurate capture of information; Bottom non-slip card slot, anti-slip feet can prevent the timer from slipping; Specifications: Color: As Shown Material: ABS Plastics Product Dimensions: 28*5.5*2.2cm Package Content: 1 x Timer Note: 1.Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 2.The color of the actual items may slightly different from the listing images due to different computer screen 3.Thanks for your understanding.