GGMM Hummingbird "" Full Metal Housing Dual Driver Noise-isolating Crystal Clear Sound In-Ear Headphones With One Button Mic (Titanium) The Hummingbird earphones feature incomparable noise-cancelling sound quality, sleek design, and ergonomic design. The microphone button allows you to answer/end phone calls and control music. Economical design with comfortable rubber caps Noise cancelling microphone Gold Plated pins reduce impedance Provides an integrated call answer/end function