2.4GHz wireless technology can provide reliable connection within 360 degrees and 10 meters without any interference. The overall shape is full with 3D ergonomic design. It can effectively reduce the hand fatigue. Low energy consumption and low current design make the battery life longer, environment protection and energy saving. It brings an utmost comfort and a robust service. More than 3 million buttons lift is guaranteed. Due to world-class quality, high precision, and performance; it makes interaction to the digital world unbelievably comfy. Easy to use no need any driver plugs and play directly. It comes in a crystal clear high quality plastic packaging box. For any issues contact us on 9555 245245 from 10AM-7PM Monday to Saturday.