Specification: Max count-down: 99 minutes 59 seconds Clock style: 12/24h changeable Power supply: 1 x 1.5V AAA battery (Not Included) Color: white and gray Dimensions: 7.5cm x 7cm x 1.5cm How to use 1. we provide a manual which behind of the timer. 2. the item contains two function: clock and count-down timer. insert the battery, it shows 12:00 clock default. 3. clock setting: press 'S' to change 12h/24h, Press 'M' for 2-3s to enter hour setting, then press 'S' to change hour; Press 'M' again, enter second setting, then press 'S' change second; Press M again to close setting. 4. Timer: press'start/stop' into timer mode, press'M' and 'S' to set minutes and seconds, then press 'start/stop' to work, again pause; press 'M' and 'S' simultaneously to clear the timer; Press 'M'+'S'+'start/stop' three button simultaneously , it will clear timer and change to clock, if you want to use timer, have to set again.
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