As 50 meters as far as 150 meters (environmental factors influence) outdoor 100-200m ( theoretical value) Frequency:working frequency 2.4 ~ 2.4835 ghz Consumption:high power consumption, 5vdc operating voltage Antenna :external antenna Operation system :supports windows 2000 / xp/vista/windows 7 / win ce/linux/mac os/android operating system Certification :comply rohs, reach ce, fcc approved Size (mm):25.0x12.0x2.0