This product is either discontinued or we cannot get that from suppliers.
ASUS SHINTARO Adesso Vertical Ergonomic E1, Glossy Black, 6 ft Full Size, 1600 dpi, Buttons-6, USB, Scrolling Wheel, Optical, Right-Handed, Wired Mouse.
With a vertical orientation and contoured shape, the iMouse E1 illuminated mouse promotes user comfort. This wireless ergonomic mouse iMouse E1 also offers switchable DPI control for a customized cursor speed.