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The ACO(model: sprit or D-sprit)archery timing device is combined with the electronic time down-counting equipment and signal lamps, and it is the developed according to the rules of international archery Federation (FTTA).Its function is especially fit for the archers¨ training and small competitions. It is consists of a LED display box (including a battery and a charger) and a remote-control unit. The LED display box is made of microprocessor technology and quartz technology. which can ensure the product be accuracy and reliable.
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