Red laser pointer
2.4 GHz wireless technology with up to 100 feet (30 meters) effective range
Timer, battery power indicator LCD display with power level and receiver
LCD display :Yes Nano Receiver :Have operating system :Vista operating system :Windows battery indicator :Have operating system :Windows 7 domain :30 m operating system :Windows XP warranty :24 months..
Logitech R400 presentation control
Technical features Integrated slideshow buttons up to 50 ft effective range with 2.4 GHz wireless technology red laser pointer with LED display plug and play-no soft..