*ONLINE ONLY - Allow extra time for delivery. Ship to store FREE! During checkout select ''Store Pick-up'' as your delivery option.* Adesso iMouse T30 - Wireless Programmable Ergonomic Trackball Mouse. Optical - Wireless - Radio Frequency - 2.40 GHz - No - Black - USB - 4800 dpi - Trackball, Scroll Wheel - 7 Button(s) - Right-handed Only. Meet one of the newest models of the Adesso Trackball product line, the Adesso iMouse T30. It incorporates the palm grip design where each user can rests the entire hand over the mouse. This design encourages users to move the cursor by rotating the track ball using their thumb and reduces the need of hand movement. It is cable-free by utilizing the 2.4 GHz radio frequency technology, offering a wireless range of up to 30 feet. It's also fully programmable, meaning every mouse button can be customized to your preferred function