Description:This is a great timer for the tools kids or adults need for game timing. Features:1. Innovative Design: The innovative design of the competition timer is to add a function that can automatically calculate the score. 2. External Port: Competitive timer is equipped with a 2.5mm external port for connection to major brand monitors and the Mobile DCTimer app. 3. Anti-Slip Design: The 5 non-slip pads of the competition timer are properly distributed on the back and are not easy to slip.Specifications:Name: Competitive TimerMaterial: ABSDimensions: Approx. 70 x 270 mm / 2.75 x 10.62 inchesPower: 2 AAA batteries (not included)Color: Black/GreyPacking List:Professional Timer Machine*1User Manual*1Notes:Due to the lighting effects and shoot angles, there is a color difference in the product, please understand.Due to manual measurement, there is tolerance in the product size.