【Fun Toy】: This sliding whistle toy will evoke fond childhood memories. The sound is clear and loud, easily capturing attention. You can play songs, imitate birds, make funny sounds, or create your own video soundtracks. 【Special Structure】: With fine workmanship, this musical whistle has a smooth transition from bass to treble, and the metal lever makes the transition easier, adjustable by pressing the top handle. 【Quality Materials】: Made of durable plastic and a stainless steel rod, these slide whistles have smooth edges, no peculiar smell, no harm to the user, are lightweight and durable, and can be used for a long time. 【Wide Use】: This 25cm slide whistle (which can be extended to 16.5 inches) is a fun, educational, and creative toy, suitable for children to play with, cultivate children's musical skills, let children learn through music, and is also a great parent-child game. 【Package Includes】: You will receive 2 pieces of musical instrument toys that can be used by yourself or shared with others while enjoying happy times. You can attract attention in various competitions, family gatherings, and you can also create ensembles with different musical instruments.