Features: 1) USB plug-and-play, no driver required 2) USB version: 1.1 compatible with 2.0 3) Radio frequency technology 4) Frequency: 433.92MHz 5) Control distance: up to 20m Functions: 1) Laser pointer 2) Timing 3) Alarm clock 4) Mouse 5) Shortcut keys of keyboard 6) Built-in Flash memory optional Packing: Gift box