SANDBERG MiniJack Headset Bulk 80013319 825-30 Product Description: Sandberg - headset Product Type: Headset - wired - 3.5 mm jack Recommended Use: Portable electronics, computer Headphones Form Factor: On-ear Connectivity Technology: Wired Sound Output Mode: Stereo Audio Specifications: Frequency Response 20 - 20000 Hz - Sensitivity 38 dB Impedance: 32 Ohm Microphone: Boom Microphone Operation Mode: Omni-directional Manufacturer Warranty: 5-year warranty