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When you carry a mouse. you are uncomfortable off the wire. And also for wireless mouse. you need another battery. BEAM MOUSE just connects to the lap top usb without a wire or battery. Light looks through the lense marks the field. and you can use the mouse in the field.
Kim, sung il
Daegu, South Korea
Park, ju young ASI|KR|KS002|TAEGU 103/505 Lotte castle Lake Apt. Down dong, Dalseo-gu, Daegu, South Korea