Fya Whistle, Professional Sports Whistle with Lanyard, Loud Clear Black Whistles Great for Coaches, Referees, and Officials sold2024 as opposed to other agents bee04 as opposed to other agents Directions for use: Shake well the bottle Apply a drop of Aramith Restorer upon the ball Rub well (with an Aramith Micro Fiber Cloth) Apply a drop of Aramith Cleaner upon the ball Rub again (with the Aramith Micro Fiber Cloth) Make the ball shine with a piece of dry cloth or paper or with an electrical buffer heavy duty bikes TRUSTED SINCE 1963 Since our origins in the back of a bike shop in 1963 Read more Specification Sound: 120Decibels Material: Thickened ABS resin Lanyard: Comfortable nylon Weight & Size:10g Loud Clear Black Whistles Great for Coaches