Labtech 2.4GHZ Wireless Optical Mouse Product Description Labtec 2.4GHz Wireless Notebook Mouse mouse Device Type MouseConnectivity Techno Wireless Receiver USB wireless receiver Movement Detection Technology Optical Manufacturer Warranty 2 years warranty Device Type Mouse Wireless Receiver USB wireless receiver Form Factor External Compatibility PC Input Device Connectivity Technology Wireless - NOTE: THIS PRODUCT CANNOT BE SHIPPED TO MASSACHUSETTS OR DISTRICT OF COLUMBIA (WASHINGTON, D.C.)