1.Rotating and Folding design,Easy to carry and save spaces.Adjustable stretchingn2.Super soft and elastic memory ear-pad,comfortable for wearing.Noise-isolation perfectly.n3.High tenacity eco-friendly plastic outer shell. Advanced-braised nylon wiren4.HIFI strong low bass speaker. Excellent three frequency resolution. Perfect sound effect.n5.Compatible for all 3.5mm jack devices ,6 colors choises.nStyle: Headband Line Length: 1.4m Resistance: 32?? Package: Yes Use: Portable Media Player Communication: Wired Plug Type: Line Type Sensitivity: 115??3dB Connectors: 3.5mm Function: Noise Cancelling,For Routine Office Work,For Mobile Phone,Portable With Microphone: Yes Frequency Response Range: 20-20Hz Model Number: MS200