The Kensington K72367EU presenter pro remote green laser has a built-in microSD card reader to enable you easy carry and store your presentations and other data files Green laser is 10 x brighter than red laser and visible on backlit displays such as LCD and plasma panels 2.4GHz wireless USB receiver prevents interference and stores inside presenter when not in use for safe keeping Micro SD card reader built in to USB receiver supports up to 32GB Comfortable and easy to use design with intuitive laser, forward, back and blackout screen controls Wireless range of up to 50m ideal for large conferences USB Plug & Play Provides control of PowerPoint' and Keynote' with no drivers needed On/Off switch helps prevent accidental battery drain Requires 2 x AAA batteries (included)