Audio-Technica ATH-WS1100iS Solid Bass Over-Ear Headphones with In-Line Microphone & Control

"Large 53 mm Deep Motion Hi-Res Audio Drivers with ultra-powerful magnetic circuit deliver incredibly accurate audio with deep bass". Frequency Response: 5 – 40,000 Hz
"Bass Venting System with extra side vents optimize air damping for excellent bass reproduction"
"Rigid housings feature aluminum centerpiece and aluminum stabilizer ring that reduce unwanted vibration for excellent audio clarity"
"Exclusive dual-layer earpads (firm internal layer and soft outer layer) provide increased isolation"
"Detachable 1.2 m (3.9') cable with mic and control for answering calls and controlling media playback on smartphones and other portable devices"
Note: Please ensure that the connection is tight and secure. A common cause for faulty connection is pocket lint in the headphone port of a cell phone. Port should be clear of any debris.