["Features：\nPointed needle design: The tail of the minute hand of this chess clock is designed to be curved, and the scale of the minute hand when the \"little red flag\" falls freely is zero.\nClock for shell and base: This chess clock for shell design, the base is enlarged, from the top to the bottom continues to increase, using the chess clock to place on the table is more stable.\nPower supply: This chess clock contains batteries, so there is no need to buy batteries when using it.This product contains 1 AA battery. If you don’for t need a battery, please note or leave us a message when placing the order, thank you!\nButton design: The button is comfortable, light, and does not make heavy sounds.\n How to use:\n1.How to operate the timing button, press the left button, the left clock will stop timing, and the right clock will start timing. On the other hand, press the right button, the right side will stop timing, the left side will start timing, and the buttons on both sides will be pressed down at the same for time (that is, the buttons on both sides are in the same horizontal position), and both clocks will stop timing.\n2. Second hand zero adjustment\nBy alternately operating the buttons on both sides, the two clock and second hands can be adjusted to the 12 o'clock position (zero position) in sequence, and the hour hand is moved in the direction of the arrows in the needle hole on the back of the clock to move the minute hand to the 12 o'clock position. When timing, the zero position of the minute hand is judged by the minute hand pushing the hourly point determination mark \"little red flag\" to the right to reach the 12 o'clock position, and the scale of the minute hand aligning with the \"little red flag\" freely falling instantaneously is the zero position.\nNote: Chess clocks should be prevented from contact with corrosive objects, and avoid exposure to the for sun, rain, drops and close to strong magnet fields\n\nSpecification：\nMaterial: Plastic\nSize: approx.18X6.5X11.5cm/7.09x2.55x4.52in\nColor: As the picture shown\nQuantity: 1Pc\n\nNote：\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Contents：\n1x Analog Chess Clock (other accessories demo in the picture is not included.)"]