Xtreamer Mini Keyboard 2 (New Model) 2.4GHZ Wireless Keyboard with Trackpad for Ultra 2 Prodigy & SideWinder 3 92 keys Ergonomic design, Perfect shape Touchpad DPI Adjustable functions & Scroll wheel function Build-in removable rechargable Li-ion battery Product Dimension: 146.8 mm (L) * 97.5 mm (W) * 19 mm (H)