The Kensington takes their legendary wireless presentation technology to next level with the K72353US presenter. The Kensington K72353US features an intuitive 4-button design to provide simple and convenient control, and the green laser which is much brighter than normal red laser delivers an eye-catch effect and attracts more attention from the audience. Kensington has a solid history in advancing presentation technology. Take advantage of their experience and get yourself a presenter of distinction! Power Supply: 2 x AAA Batteries Distance: 150 ft. Receiver Interface: USB Laser Pointer Supported: Green Laser Pointer Color: Black Features: Operating Frequency: 2.402GHz to 2.478GHz Ultra bright green laser pointer for use on all screens Designed to fit comfortably in the palm of your hand Intuitive four-button design is comfortable and easy to use 2.4 GHz wireless with extended range up to 150 feet Works with PowerPoint and Keynote - no drivers needed Wireless receiver stores inside Low-battery indicator and on/off switch Carrying case to carry and protect the presenter on the go Labor: 2 years limited Parts: 2 years limited