A professional and ergonomic presenter, featuring tactile keys, battery level indicator and a double red laser pointer thats twice as visible as ordinary red lasers. Fully compatible with Windows and Mac OS X, its wireless range of up to 20 m makes it ideal for conducting business, education, medicine and engineering presentations in even the biggest meeting rooms. Benefits Present from afar with the wireless range of up to 20 m Ensure superb clarity with the highly visible 635 nm red laser pointer Capture your audiences attention: total laser range in darkness of 200 m Easy-to-see laser beam with a diameter of 8 mm from 5 m distance Easily control slides with the discrete, intuitive tactile keys Convenient plug and play compatibility with Mac OS X and Windows Runs on standard batteries, with battery level indicator. What\'s in the box PR500-R Laser Presenter Pouch case USB dongle (D20A storable in presenter) AAA battery x 2