Features: 1.Upon receiving the electric violin, note that the bridge is wrapped in paper under the tailpiece—do not discard it; it should be installed between the two F holes. 2.If the 4/4 violin's bow hairs are loose, don't worry; tighten the frog screw for tautness. 3.It's normal for part of the electric violin 4/4 full size's bow hair to break; cut off the broken section, and the bow remains usable. 4.Be careful not to over-tighten the beginner violin's bow; the hair should have a slight bounce without touching the stick, ideally about 1/4 inch from the low point of the curve. 5.Hold the rosin with fingers, tighten the bow, and evenly smear the rosin on the bowstring. Before applying, scrape the rosin to make it powdery; keep hands clean to avoid stickiness. 6.If a string falls out, don't worry; it can be reinstalled. Specifications: 1. Violin Color: Black 2. Weight: 4.12 pounds / 1870g 3. Violin Dimensions: (23.42 x 8.26 x 2.75)" (L x W x H) 4. Bow Length: 29.13" 5. Face Dimensions: (14.01 x 8.27 x 2.76)" (L x W x H) 6. Rosin Dimensions: (1.89 x 1.22 x 0.63)" (L x W x H) 7. Case Dimensions: (31.49 x 9.84 x 5.12)" (L x W x H) 8. Size: 4/4 9. Back Material: Spruce 10. Side Material: Spruce 11. Face Material: Spruce 12. Top Material: Maple 13. Chin Rest Material: Ebony 14. Tuning Peg Material: Ebony 15. Tailpiece Material: Ebony 16. End Pin Material: Ebony 17. Violin Bridge Material: Maple 18. Violin Bow Material: Arbor Package Included: 1 x 4/4 Black Electric Silent Violin 1 x Rosin 1 x Bow 1 x Case 1 x Headphone 1 x Line V-002