TREWGrip Wireless Handheld Keyboard, LARGE GRIP Prevents Pronation: Allows users to avoid typing with the palms down and, instead, to experience the ergonomic benefits of maintaining the hands in the 'handshake' position which is known to reduce the risk of injury. Reduces Risk of Thoracic Outlet Syndrome: Allows users to keep arms shoulder width apart to avoid discomfort. Eliminates Overreach: By combining a keyboard and mouse, or keyboard and game controller into one device, the TREWGrip Mobile Dock eliminates the need to reach for a separate input device. Facilitates Greater Activity: Can be used by anyone while standing, and by touch typists while walking which makes this suitable for use on the go. Two Operating Modes: The TREWGrip Mobile Dock can be toggled between keyboard/ mouse mode, and keyboard/game controller mode.