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* TRACKBALL - Designed for any trackball mice using 1.34 (34mm) trackball size. Such as: PERIMICE-517/717, MX Ergo, M570, Cordless, TrackMan Wheel (not include Trackman Marble), M-XT3DRBK (EX-6), M-DT2URBK, EX-G/DEFT, MA-WTB43BK
GLOSSY SURFACE - The surface is treated with a special coating to provide a precise and smooth tracking performance
ABSOLUTE SPHERICAL - A diameter of 2.17 inches. Provides fast movements and works perfectly for multiple screen control
HOW TO REMOVE THE TRACKBALL - The trackball from PERIMICE-517/717 … | |