It comes in Red and Blue and features a scroll wheel with 800 dpi resolution, while it comes with 2 AAA batteries.
If you want to add a cool USB stick in matching colors you can try Google’s Recycled 1 GB USB from the same place as the mini mouse. This one will allow you to carry your favorite media everywhere you go and it’s made of 100% recycled plastic.
You can choose from the 4 different Google colors and get it at a price of $22.50.