Model No.:SM-HD900
1,The unique design of enclosed cavity 
2,24k gold-plated 3.5mm & 6.3mm transferable plug is applicable to smartphone , iPad ,iPod and other devices.
3,50mm speaker can provide you with wide frequency range to enjoy music.
4,Adjustable headband 
5,soft protein cushion 
6,High-end peek diaphragm

Specification:                                                                                               Speaker size:50mm                                                                                 Sensitivity:106±3dB                                                                                         Impedance:19ohms                                                                                           Frequency Response:20~20kHz                                                                                 Cord Length:380CM

Microphone specification:
Mic Dimensions:4x1.5mm
Sensitivity:-42±3dB 
Frequency Response:30~16000Hz
Directivity:Omnidirectional