Wireless 2.4 GHz USB receiver for uninterrupted operation; stores away in the presenter case Supports Advanced Encryption standard (AES) - not vulnerable to radio attacks The presenter is automatically powered off when the receiver is stored in the presenter to conserve energy Range of up to 20m-ideal for use in conference rooms Designed to fit comfortably in the palm of your hand Rubber finish for protection and a better grip Plug-and-play USB connection; compatible with PC and Mac Non-laser presenter-ideal for air travel or other environments where lasers are prohibited Battery level indicator light Requires 2 x AAA batteries (included) Elegant, matte black finish Intuitive, user-friendly presentation controls