Kenmerken:2.4GHz, Long Wireless Distance Up to 10 MetersThe 2.4GHz RF wireless technology is fine-tuned with 16 selected channels; it offers precise and smooth wireless operation even in busy wireless environments. It allows many wireless devices to operate simultaneously in one area without interfering in the distance about 10 meters (depend on working environments).Note: Actual operating distance may vary and depend on working environments.Ultra Low Battery Power Consumption-Only 8mA! -2.4GHz RF wireless is designed with '4 Level Auto Power Saving' modes with ultra low battery power consumption, it only requires 8mA of electric current to operate. It saves valuable battery power and cost.High Definition Optical Sensor 1000 DPIQuiet Scrolling Wheel is also a Programmable ButtonID Code Button on Universal ReceiverNo Channel Synchronization required When Replacing Batteries!2-Way Communication Technology without DelayAnti-interference with Auto Channel Hopping Technology