WARRANTY & WIDE COMPATIBILITY: Conambo support a 45-day money-back guarantee and 2-year free warranty. This USB headset works with common calling applications across almost all platforms and operating systems. EASY to USE: Simply plug in and play, no installation needed. The USB headset adopts an in-line control design, , you can easily adjust the volume, microphone and speaker ON/OFF buttons. DURABLE DESIGN: Ergonomically design, quality plastics, uni-body headband construction and leatherette ear pads make the USB headset durable and easy to clean for long-term use. COMFORTABLE WEAR: Super lightweight computer headset with a 270° rotatable mic and two 180° rotatable earmuffs can provide the most suitable positing, enjoy the optimal wearing comfort. CRYSTAL CLEAR SOUND: Enable DSP and unidirectional noise cancelling microphone technology to minimize background noise, improve voice clarity, achieve crystal-clear sound.