Logitech announced a range of optical mice at CeBit today. The company also introduced wireless keyboards and refreshed its line of wired mice.

The $49.95 Cordless Desktop Express is a wireless keyboard and mouse combination. The devices communicate with a computer using a radio frequency (RF) receiver. The keyboard and mouse can operate up to six feet away from the receiver, said Logitech spokesman Nathan Papadopulos.

The Logitech Cordless Optical mouse, which is part of the Cordless Desktop Express, will also sell separately for $29.95. Both products work with Mac and Windows, and will be available in US and Europe next month, and later this year in Asia.

Logitech's new portable $29.95 Notebook Optical Mouse Plus has a built-in cable that can be pulled out and connected to a USB port. Once the mouse is unplugged, the cord winds itself and snaps back into the base of the mouse, where it protects the optical sensor. The product ships next month.

A mini-receiver will soon ship for the Cordless Click Plus Optical and Cordless Click Optical mouses, Logitech said. The mini-receiver, approximately the size of a car key, plugs into a USB port and works instantly after sensing the companion mouse, the Logitech says. The device's installation is designed to eliminate complications usually involved in installing wireless devices, said Papadopulos. The receiver uses RF technology and will work with mice up to six feet away, he said.

The $49.95 Cordless Click Plus Optical is meant for right-handed users, and the $39.95 Cordless Click Optical is meant for ambidextrous users. They ship in May, and the products reach the US and Asia in July.

Logitech has redesigned and reissued its wired Optical Mouse for $14.95, its cheapest price ever, said Papadopulos. It will be available in the US and Europe in late-March and in Asia in April.

UK prices to be confirmed.