Experience the charm of the violin on-the-go with our playable Violin Keychain! Featuring sound, LED lights, added visual effects, and a release button to stop the music. Durable and compact, it's perfect for music lovers and musicians. Size: 78.03x34.62x15.54mmMaterial: PPUse suggestions:Since the battery may come loose by pulling the tab out, the sound will not work, try reinserting the tab in and out a few times to reset it. If you still have sound quality problems, try tapping the violin on the table lightly, the batteries inside may be loose. Make sure you press the button harder than you intended, otherwise the sound may cycle prematurely.List:Tiny Violin Keychain with Sound x1