genuine tianfu pq9905 chess clock competition timer chess go timer clock stopwatch timing

Product SizeApproximately 20cm * 11cm * 5cm

【Box Size】Approximately 22cm * 13cm * 5.5cm

【Product Item Number】PQ9905
【Product Weight】Approximately 0.48kg

【Product Description】
1. The competition clock is designed with a start button structure, making the timing operation intuitive, convenient, and accurate, with a daily error of no more than 1 second. It is suitable for various chess competition timing clocks.
2. Power source: A single AA alkaline battery
Usage Method:
1) Timing button operation method: press the left button to stop the timing of the left clock and start the timing of the right clock. Conversely, press the right button to stop the timing of the right clock and start the timing of the left clock. When both buttons are pressed halfway (that is, both buttons are at the same horizontal position), both clocks are in the stopped timing state.
2) Adjust the second hand to zero position
By alternately operating the buttons on both sides, you can adjust the two clock seconds hands to the 12 o'clock position (zero position), respectively, by pushing the hour hand and minute hand to the 12 o'clock position according to the arrow direction on the back of the clock. For the competition clock, the determination of the zero position of the minute hand is based on the minute hand pushing the whole point judgment mark "little red flag" to the right and rising to the 12 o'clock position, with the "little red flag" falling freely, the minute hand is aligned with the scale as the zero position.
4. Maintenance and Maintenance
Chess clocks should be prevented from coming into contact with corrosive items, and should be avoided from direct sunlight, rain, falls, and proximity to strong magnetic fields.