2.4G Wireless Transmission: 2.4G Wireless Transmission Technology (with USB receiver) ensures a stable connection without any delay, and offers a range up to 10 meters (32.8 feet), making it possible to enjoy playing from the far side of the room Ergonomics Design: Improved ergonomics for extended play time: As a full-featured controller, the wireless controller delivers accurate and responsive gaming speeds. Compact and ergonomic shape ensures a few hours of comfort on your PC Intelligent power-saving mode: The battery life can be extended effectively through intelligent sleep, wake-up function and power on/off button. The controller is powered by 2 pieces of 1800 mah AA batteries. The battery is NOT included in the package. Customers may met problem due to use the item incorrectly, please contact seller in advance if any questions before returning. Improved design: The new left and right shoulder button design is easy to use, 12 function keys, Support 2 handles at the same time (requires game support) Wide Compatibility: Wireless gaming controller supports PC (Windows XP/7/8/8.1/10), PS3, Steam, Android (version 4.0 or above, the device must fully support OTG function)