Feature:1. [ Can Hear] After using this headset, can hear the sound of the guitar, which can help you learn music and prevent disturbing people.2. [ Quality] The loss of the earphones to the sound quality is small, and the sound transmitted is pure, bright and clear.3. [Retractable Design] The head size of the earphones can be adjusted and stretched, without pressing the head, and it will not be uncomfortable to wear for a long time.4. [Easy to Store] The earphones are foldable and can be folded for storage when not in use without taking up space.5. [ABS Material] The earphones use ABS material as the shell, making the earphones and more convenient to wear and carry.Specification:Item Type: Guitar headphoneApplicable Type: Acoustic guitar, electric guitar are suitableHorn Inner Diameter: . 40mm / 1.6inImpedance: 32Frequency Response: 20Hz-20000HzWire Specifications:Diameter: . 3.0mm / 0.1inLength: . 2.0m / 6.6ftPlug size: 3.5mm pinMaterial: ABScolour: blackPackage Contents:1 x Guitar HeadphoneOnly 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.