[OPEN BOX] MARVO Monka Echo TRI-MODE WIRELESS GAMING HEADSET / Adjustable Headband / Ergonomical Designed Ear Cups / Switch to Wired Mode / 360° Pickup Microphone / Detachable microphone / 6hrs Music Time / 2hrs Charging Time / 10m Transmission Distance / 3.7V-800mAh Battery / 40 mm Drivers / OB-HG9069W / OB-HG9069W