Check the listing for details. PPT 650nm USB Wireless RF Remote PPT Presentation Red Laser Pointer/Pen Silver. Condition: New. Listed at 4.59 USD. PPT-WH Laser Pointer USB Wireless RF Remote Powerpoint control red laser PPT presentation presenter pen Description: 1. RF Frequency: 315MHz (USA, Asia), 433.92MHz(Europe)2. Wave length and Laser module: 650nm; Class II3. Output power: 5mW4. USB receiver is Plug & Play - no driver required, suitable for PC Windows98/ 2000/ ME/ XP/ Nux & Mac OS5. Page up and Page down function6. Battery: 1XAAA Battery for Tranmitter (not included), the receiver is USB Bus-powered7. Working Current: 15mA; 10-12mA8. Remote Control distance: 15m9. Size: 115X18X19mm for Transmitter, 65mmx7mmx20mm for Receiver10. Memory: none11. Material: Plastic12. Color: Silver Feature: It is Laser Pointer Pen USB Wireless Presenter.Easy to operate, easily portable!It makes your business presentation much easiere and fun.It uses 1x AAA Battery to drive.Very handy and useful Package: 1 x USB Wireless RF Remote Powerpoint control red laser PPT presentation pen(with a nice black box package, 1x AAA battery not Included) 无标题文档