High-precision optical trackball. Never needs cleaning. LED roller shines the status of trackball movements. Supports Windows 98/2000/Me/NT/XP. With the optical technology,the motion canbe detected on most surfaces, including wood plastic, paint, etc. [ Buying Categories ] - Other Gifts & Crafts >> Gifts & Crafts
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High-precision optical trackball. Never needs cleaning. LED roller shines the status of trackball movements. Supports Windows 98/2000/Me/NT/XP. With the optical technology,the motion canbe detected on most surfaces, including wood plastic, paint, etc. [ Buying Categories ] - Other Gifts & Crafts >> Gifts & Crafts