Unboxing Plantronics Audio 345 Backphone Stereo Headset br br Product Link: br br Product Description:br Superb voice quality for internet calls and a discreet wearing style ideal for video calls. Enjoy your favorite music and movies in full stereo sound.br br br Featuresbr • Lightweight, behind-the-head stylebr • Full-range stereobr • Noise-canceling microphonebr • Convenient, in-line controlsbr br br SPECIFICATIONS:br • Speaker driver size (diameter): 36mmbr • Speaker frequency response (Hz-kHz): 20-20br • Speaker Impedance: 32 Ohmsbr • Microphone type (unidirectional): Electretbr • Microphone Impedance: 2k Ohmsbr • Microphone frequency response (Hz-kHz): 100-8br • Cable Length: 2.5mbr • Plug Type: 3.