• ABS Plastic headphones with built-in microphone for making and receiving phone calls - designed for use with iPhones and on computers and tablets with microphone and sound capabilities. • Features PVC cord with microphone (cord measures approx. 45"l). • Fold/collapse for convenience. • Each pair comes folded in 75D Polyester drawstring pouch (approx. 6.875"w x 3.5"h x 0.25"d). • Place headphones directly over ears for optimal sound quality. • Speak directly into microphone panel for clarity. • Power supply / Technology: Frequency Range: 20Hz-20,000 Hz; Sensitivity: 108±3dB at 1KHz,5mW; Rated Input Power: 50mW; Maximum Input Power: 10mW; Transducer: 9?m; Impedance: 32ohms ±5?; Driver Unit ?10mm; Speaker:?27mm; Magnet: NdFeB strong magnet; Headphone Plug Type: 3.5mm Stereo. • Certified FCC. Optional imprint available on pouch (Silk Screen) for an additional fee. Pouch imprint area: 5.25"w x 2.375"h. Setup and run charges apply.