This cordless, finger-operated trackball eliminates the cord clutter and provides precise, accurate, optical performance. Logitech's advanced digital radio technology combined with Marble Optical performance is reliable and responsive. Logitech's smart power management means that the low battery indicator gives plenty of warning before the batteries need to be changed.

• No line of sight required
• Patented optical technology for extraordinary precision and ultra-smooth tracking
• Large, finger-operated tracking ball and seven buttons for extra control
• Forward and back buttons for faster Internet navigation
• Scroll wheel and drag-lock button for easier manoeuvrability
• Extremely comfortable shape with soft-touch surface
• Advanced digital radio technology lets you work up to two metres of the receiver
• Smart power management - up to 6 months of reliable power with the two included AA batteries