This is a good value wireless set-up.
The mouse, though small and not shaped to sit in the palm of your hand like traditional MS mice, is fine to use for long periods and has an off switch to save battery used with leaving the laser on.
Unfortunately, the keyboard makes some basic ergonomic mistakes which make it hard to use fluently. For example, there is no gap between the 3 main sections of the keyboard so the "Insert" key is directly next to the "Backspace" key - this makes touch typing less effective as more errors are caused. Also, the "Escape" key is wider than usual so the "F1" key is shifted along to be where the "F2" key should be and so on.