Brand: Havit Headphone Style: Over-Ear Headphone Type: Wired Headphone Plug: 3.5mm Built-in Mic: Yes Speaker: 40mm Speaker Input Impedance: 32 Ohms Button: Volume Controls Speaker Sensitivity: 110 dB Supported: PC, Mac, smartphones, tablets Cable length: 2m Headband: Adjustable Features: Noise Cancelling Hi-Fi Sound Package: 1/Pack