Mini Musician Pro Toy Accordion Children's Instrument w/ 7 Treble Keys, 3 Air Valves, Hand Strap (Black) Mini Musician Pro Toy Accordion Children's Instrument 7 Treble Keys and 3 Air Valves Heavy Duty Hand Strap with Button Down Straps for Storage Very Easy to Use, Simple Fun! Perfect for your Little Musician! Length: 7", 14" (Fully Extended)