说明

• one hundred twenty dB Three Chambers Pealess Handheld Curved High Pitched Sports Whistle for Basketball Soccer Football Referee Training Command Rescue Whistles Material: ABS resin Size Anti drop design Curved anti drop structure, tough to slip off Three Chambers Handheld ergonomic Flat air chamber According to the foundations of physics, a flat acoustic chamber is designed to compress space and create faster airflow, generating excessive pitched sounds Colors Red, orange, green, white, black

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