1. In terms of materials, high-quality raw materials are used to ensure that they meet safety standards and are durable 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 better sense of music, and the three-frequency connection is smooth and the sound field is more relaxed and natural. 4. Ensure safety, non-toxic and radiation-free, green and environmentally friendly, safe to use Depending on the batch, the printed code characters under TS are random and will not affect the use of the product. Thank you. Product Description: Model: TSK-Y1030-032N01-HF Type Electric type: (moving coil type) Shape: round Composition method: coaxial composite Diaphragm material: non-paper Magnetic circuit form: internal magnetic type Frequency characteristics: full frequency band (full range) Rated power: 5m (W) Rated impedance: 32 (Ω) Frequency response: 50-10 (kHz) Sensitivity: 107±1.5 (dB/W) Harmonic distortion: ≤1 (TMD%) Applicable products: headphone speakers Material: Metal colour: white Package Contents: 4 x headphone speakers