Wireless Presenter H2640 Mobile mouse

Wireless presenter mouse H2640 Function: 1) Laser pointer function,Page up / down function. 2) Turn off screen function 3) To play by hot key function 4) Remote technology: infrared ray technology 5) USB plug and play, no driver requested 6) Fixed focus, dot shape facula, continuous output and working time over 5,000 hours 7) Control distance: over 28M 8) OS: Windows 98 / 2000 / ME / XP system, for Word, Excel, PowerPoint, ACDSee, Website, Acrobat Reader files 9)Wireless optical mouse 10)2.4GHz Fast RF 11) Output wavelength: 650nm, Output power: 5mW 12) Working voltage: DC 3.0V, Trigger voltage: DC 2.3V 13) Working temperature: -10 +40 typical value: 25 ,Storage temperature: -20 +50 typical value: 25