Wireless optical mouse features low power consumption with under 7MA (3 volts) as compared to 25MA of normal units. Made for continual use up to 12 hours a day for approximately 60 days. Rate of this mouse is 125MHz as compared to 85GHz of a normal RF wireless mouse. Excellent solution for gaming. Features power on/off, low battery warning and "2x" convenience click button for opening file with one click.