Dual-Wireless technology provides rock solid, 2.4G wireless lossless audio for gaming, combined with Bluetooth connectivity for mobile devices Premium Hi-Res speakers with high-density neodymium magnets reproduce a full, expansive frequency range from 10 - 40,000 Hz with stunning realism and clarity Luxurious polished steel and aluminum alloy construction offers maximum durability and a consistent fit Two included swappable batteries allow you to charge a battery in the base station, while using the other for more than 20 hours of gaming Widely recognized as the best mic in gaming, the ClearCast microphone delivers studio-quality voice clarity and background noise cancellation The Year that is on the product is manufacturing Date