Высококачественный Прочный рекламный двухчастотный свисток, подходящий для детских игр на открытом воздухе и занятий спортом на открытом воздухе

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Description

High quality strong and durable promotional dual-frequency whistle suitable for outdoor children's play and outdoor sports

       The blowing of a whistleBeginners, often is the muscles of the cheeks, tongue, lips forward extension, relaxation, large damper.The local dialect said that like a torch blowing straight, blowing out of the air is not urgent, fatigue, so the whistle is not bright.The correct method is: will the first whistle mouth in your mouth, use, incised teeth biting whistle mouth - the inner side of the upper and lower flange, firmness to will whistle blown off by airflow from the upper and lower teeth not advisable, the tip of the tongue is a bit hard block ShaoKou, upper and lower lips package the neck of the whistle, watch the leak, the chest muscle contraction, make the pressure inside the chest cavity increases, at the same time, the nose breath, mouth on both sides of the muscle contraction,It's blowing outward.Then the tip of the tongue suddenly retracts to open the whistle, allowing air to flow into the whistle.Blow a whistle. The strength and volume of the whistle are determined by the force of the blow.Regardless of the length of the whistle,All need base air enough, with the tip of the tongue against the whistle, instant gas, otherwise it is easy to form "air leakage", whistle sound is not clear, can not have the effect.