1. In terms of materials, high-quality raw materials are used to that they meet safety standards and are 2. In terms of technology, the technology adopts excellent production standards, so that the sound quality of the audio can be better presented 3. In terms of performance, the performance has a of music, and the three-frequency connection is smooth and the sound field is more relaxed and natural. 4. safety, non- and radiation-free, green and environmentally friendly, safe to use : Model: TSK-Y5019-006N01-GP Type: electric (moving coil) Shape: round Composition method: coaxial composite Diaphragm material: non-paper Magnetic circuit form: internal magnetic type Frequency characteristics: treble (high frequency) Rated power: 2 (W) Rated impedance: 6 () Frequency response: 5-100000 (kHz) Sensitivity: 1013 (dB/W) Harmonic distortion: Less than4% (TMD%) Material: Metal colour: white Package Contents: 2 x headphone speakers 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.