Specifications‎:‎Wired mini USB 3D optical handheld finger ring mouse for laptop‎.‎3D internet wheel fully supports the wheel operation functions of Windows OS series‎.‎USB interface‎,‎ Plug‎-and‎-Play‎,‎ no installation need‎.‎No mouse pad required‎,‎ sliding on any surface‎.‎Real hardware resolution 1200dpi ‎- fastest and best ‎.‎fulfill the autoseroll and zooming function etc by its own drive‎.‎Digital encoder technology‎,‎ operate precisely‎,‎ prevent faulty movement effectively‎.‎Suitable as a gift for your friend or yourself‎.‎Type‎:‎ Finger Ring MouseConnector‎:‎ USBColor‎:‎ BlackSuitable Equipment‎:‎ LaptopCompatible for‎:‎ for Windows 98/2000/NT/XP/Vista‎,‎ for Mac OSDiameter‎:‎ 2.7cm/1.06‎"‎ ‎(‎Approx‎.‎‎)‎Length‎:‎ 6.3cm/2.48‎"‎ ‎(‎Approx‎.‎‎)‎Width‎:‎ 2.8cm/1.1‎"‎ ‎(‎Approx‎.‎‎)‎Notes‎:‎Due to the light and screen setting difference‎,‎ the item‎'‎s color may be slightly different from the pictures‎.‎Please allow slight dimension difference due to different manual measurement‎.‎Package Includes‎:‎1 x Finger Ring Mouse ‎(‎with Wire‎)‎