1. Ergonomic streamline high and low key position layout, adapt to the human hand tapping the keyboard movement arc,feel comfortable 2. The product configuration is the middle end game IC; the mouse key life 12 million times. 3. The mouse button uses the high-grade skin like technology, the side uses the metal texture electroplating craft, the mouse bottom adds a piece of 1.1 thickness steel plate,full of metal feeling.