Product features:

• In-ear headphones
• Neodymium magnetic transmission bright acoustics
• Drive unit: diameter of 30mm
  Headphones (drive unit):headphone the sound of heart and Ministry of sound. Aperture larger, greater the volume of low-field. Headset sound quality with the diaphragm (vibrating plate) is directly proportional to the size of the. Drive diameter size, ear headphones using φ-13.5~16.5mm, ear plugs (ear type) use φ 9~13.5mm, φ 30~50mm headset to use.
• Sensitivity: 104dB/mW
  Sensitivity:when entering a 1mW sound, headphones playback of sound intensity. Unit is dB (decibel)/mW. The larger, obtained through a certain volume of sound is bigger. Generally thought to 3dB/mW per cent of the poor will be able to hear the difference.
• Frequency range: 20-24,000Hz
  Frequency response range:lower number refers to the frequency of headphones can play (bass) and Cap (high range) range between. Human hearing range is generally considered 20~20,000Hz (Hz), but outside the range of voices can also affect the sense of hearing.
• Impedance: 24 ω (1kHz)
  Impedance:display headset with resistance values, primarily represents the resistance of the voice coil (also includes the line resistance value). Unit is ω (ohms). If used on portable players with low voltage-driven low impedance headphones, power efficiency will be improved.
• Maximum power: 1,000mW (EIA)
• 质量：约33g（不包括线）