Somic G909 Gaming Headphone Camouflage Surround stereo 7.1 sound effects: (1)Advanced decoding multi-channel processing chips; (2)Hi-flux 40mm large diameter drive unit; German VIB synergistic vibration unit: It is a separated Bass extension Drive which generates sub-woofer effects with the USB-charged power amplifier, which is beyond the capacity of ordinary headset. High-end leather earmuff: The fully-closed earmuff isolates ambient noise effectively. With the addition of broad head beam, the headset guarantees comfortable wearing even after long-time gaming. Connectivity technology: Wired, USB