There are certain situations when you need to keep your head cool, and concentrate without pressure. Ozone Onda ST has been designed for that purpose. Onda ST is the evolution of the Ozone stereo headsets. This professional headset will overcome your expectations about stereo earphones. With a high quality sound range and a detachable microphone that catch all the details it will become a great partner for your hardest battles. This headset has been designed to provide comfort for the longest gaming sessions. Thanks to the ultraconfortable headband and its soft cushions you will ever feel it as a second skin. Features - High quality 40 mm speakers - Ultracomfortable headband - Soft cushions for long gaming sessions - Inline audio controller - High quality detachable microphone - Low weight ergonomic design Microphone Directivity: Omnidirectional Impedance: less than or equal to 2.2KOhms Sensitivity: -54dB +/- 3dB Headphones Driver Dimensions: 40mm Impedance: 32 ohms Frequency Response: 20 ~ 20kHz Sensitivity (SPL): 117dB +/- 4dB General Cord Length: 250 +/- 10 cm Plug: 3.5 mm jack (headphones + mic) Net Weight: 310g