Sentry Industries HM964 Deep Bass Stereo Headphones with Mic, Red Two-tone color deep bass stereo headphones with microphone, soft over-the-ear ear pads, and 40mm dynamic drivers.Connectivity Technology: Wired Ideal for use with smartphones, cellphones, iPod, iPhone, MP3 player, tablets, PCs and laptops, DVD players, gaming and more Listen to music and talk to friends with two-line built-in click control Omni microphone Frequency: 20Hz - 20kHz; Impedance: 32 +/- 3 ohms; Sensitivity: 103dB +/- 3dB 4-feet long cord with 3.5mm plug