1. Prevent Bursted Noise

2. Nano Electroplate

3. Environmental Wire & Adjustable Necklace Earphone

4. Professional Stereo Sound

Specification:

• Patented Burst-Free, Noise Cancellation
• Sensitivity: 115dB/mW
• Voice Call Impendence: 15% AT 1K H Z
• Sound Pressure Level: 115 dB
• SONY Technology
• 6 Professional Sound Quality
• Flux Density: Gauss
• Buzz & Rating: 178mv 600 800 1K 2K
• Normal Power Rating: 3mw
• Max Power Rating: 10mw
• Magnet Size: 6*2.0mn
• Net Weight of Speaker: 0.5Gram
• Polarity: (R)IS (*) When Pub Face Up
• Distortion: 3% AT 1K H Z
• Frequency Response: 16-25000 H Z