Adjustable Guitar Strings: guitar toys come with 4 strings. Different Strings (Adjustable strings'tighten or loose by button) with different undulations will make different sounds. Through the rhythm of the finger, Let the kid distinguish the scales to exercise the sharpness of the child's hearing. Safe Material: Children's guitar made of high-quality ABS environmentally material to children's safety. Portable Guitar Toys: The Electronic guitar toy for kids come with back strap, easy to carry. And the toy guitar powered by 3xAA batteries(Not Included), size is 17 x 6 x 1.6 Inches,weighs 0.77 pounds. Please pay attention to the size before buying. Best Gift: Toys guitar musical instruments make children enjoy beautiful music, a great musical gifts for children and beginner guitar. Tips:This is just a toy guitar driven by batteries, not a real guitar. Colour:C:Blue Material:Plastic Size:43x15x5.2cm Package Contents: 1 * Guitar Toy 1 * back strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.