A4Tech 45921 V-Track OP-560NU Black

8-in-One software
Consists of value-added functions, such as: Multimedia, Internet, 4-way wheel, etc.
Best software for your every need.
— V-Track works anywhere without a pad.
— Vertical light ensures perfect precision.
— Short light path consumes lower power.
— Incomparable adaptability on all surfaces.
— Smoothly when using even on soft fabrics.
— Tiny lens hole brings the best precision.
Innovative V-Track technology utilizes vertical light which goes deep into the details of all surfaces. Guaranteed smooth and accurate tracking anywhere, even on furry textiles. Throw away your mouse pad! Mouse Device interface: USB Purpose: Office Movement detection technology: Optical Scroll type: Wheel Buttons quantity: 3 Buttons type: Pressed buttons Scroll: Y Movement resolution: 1000 DPI Programmable mouse buttons: Y Recommended usage: PC Number of scroll wheels: 1 Scrolling directions: Vertical/Horizontal Design Form factor: Ambidextrous Colour of product: Black Surface coloration: Monotone Power Power source: Cable Packaging data Quantity: 1