The Logitech V400 Laser Cordless Mouse for Notebooks offers boundless mobility with an All-Terrain Laser sensor that tracks on even more surfaces. Enjoy mobility without boundaries. 2.4 GHz Digital Cordless gives you a 5X greater cordless range, with no i

REVIEWS:
1) Logitech V400 Laser Cordless Mouse: This dual laser mouse was to work on uneven surfaces. It does not and on a flat surface, it is poor at best. I gave it away.
2) Great Gift!: The mouse was a present for my 22 year old brother. He loved it!