oem break time buzzer sound watch

Buzzer Timer - 80db Audio, AAA Battery Type, Digital Display, Countdown Function Buzzer Timer Description The buzzer timer can be set for different time intervals, ranging from seconds to hours, depending on the specific needs of the user. Some models may ......

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... Introduce player information and the actual situation of the game. The large and clear live broadcast of the game breaks the limits of the seat and makes it easier to watch the game from a distance. 3, connect the referee system, timing scoring system,...