Features and Specifications:

• Quality optimization of exclusive patent, metal composite vibrating membrance
• The ergonomic design, nipple grade silicone ear muffs
• Ear and tail pipe connection with oblique angle design, comfortable and easy to wear
• It has high quality sound, enjoy your life
• A perfect gift for yourself or friend
• Material: Metal CNC Zinc alloy
• Speaker: 9.2 mm NdFeB speaker
• Speaker Power: Rated input power: 3mW, Maximum input power: 5mW
• Impedance: 16? ? 15%
• Speaker Sensitivity: 94?2dB (at 1KHz 1mW)
• Speaker Frequency Response: 20-22K Hz
• Microphone Sensitivity: -42dB?3dB1kHz, 3V 0dB=1V/pa
• Function: Play / Pause, Answer / Off, Noise Cancelling, Microphone
• Weight: 15g

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Package Included:

• 1 x QKZ DM9 Earphone
• 6 x Earbud
• 1 x Case