Red - Bluetooth Smart Technology - Quickly and easily connect to a PC, Mac, tablet, smartphone or laptop. Includes USB Bluetooth nano dongle for connecting to devices lacking BluetoothTrack-on-Glass Sensor. Versatile laser sensor works on nearly any surfacePrecise Cursor Control. Hold the Precision Control button to slow the cursor and dive deep into image editing software within Adobe Creative CloudAdjustable Palm Rest. Extends and retracts to match your hand size and grip style Horizontal Scrolling. Quickly navigate webpages and documents with the scroll wheel's side-to-side functionality 10 Programmable Shortcuts. Simple drag-and-drop software contains standard profiles for leading office and design programs including Photoshop, AutoCAD, Word, and Excel. Easily set custom functions to any of the 10 programmable controls.