Eliminate the need to reach for a mouse with the ergonomically constructed Contour Design Wireless RollerMouse Red Plus. This mouse features a durable aluminum body and a redesigned, textured rollerbar. The rollerbar provides two functions including moving the cursor and performing a left click. The RollerMouse Red Plus comes with an extended wrist rest, adding an additional 2" of support to your palms, wrists, and forearms. This mouse also features six programmable buttons, a scroll wheel, and an on and off switch. Additionally, there's a dpi switch button, which allows you to change from 10 different speed settings from 800 to 2400 dpi.