USB Wireless RF Remote PPT Presentation Red Laser Pointer/Pe

Usb wireless rf remote ppt presentation red laser pointer/pen description: 1. rf frequency: 315mhz (usa, asia), 433.92mhz(europe) 2. wave length and laser module: 650nm; class ii 3. output power: 5mw 4. usb receiver is plug & play - no driver required, suitable for pc windows98/ 2000/ me/ xp/ nux & mac os 5. page up and page down function 6. battery: 1xaaa battery for tranmitter (not included), the receiver is usb bus-powered 7. working current: 15ma; 10-12ma 8. remote control distance: 15m 9. size: 115x18x19mm for transmitter, 65mmx7mmx20mm for receiver 10. memory: none 11. material and color black & plastic