From the Manufacturer
http://steelseries.com/products/keyboards/steelseries-apex-gaming-keyboard
Brand
SteelSeries
Name
Sensei
Model
62150
Details
Wired
Interface
USB
Laser
11400 dpi
Both Hands
Buttons
8
Scrolling Capability
1 x Wheel
Color
Grey
OS / System Requirement
Operating System Supported
Windows 2000
Windows XP
Windows Vista
Windows 7
Mac OS X
Features
Features
Programmable macro buttons
Driverless plug-and-play
User defined bitmaps for the on-mouse LCD
SteelSeries ExactSens
SteelSeries FreeMove
Menu system on the mouse
SteelSeries ExactAim
7 programmable buttons
SteelSeries ExactLift
Gold-plated USB connector
16 million colors of illumination
Three zone lighting - Scroll Wheel, CPI Indicator, and Logo
Specifications:
Cord Length (ft): 6.5
Documentation Type: Quick Start Guide
Sample of Documentation: Attached
Frames per Second: 12000
Inches per Second: 150
Lift Distance (in): 0.04
Illumination: Yes
Profiles Available: Yes
Macros Available: Yes
Statistics Available: Yes
Firmware Upgradable: Yes
Switch Life-Cycle (Clicks): 10 million for Left/Right, > 1 million for other switches
Cord Material: Braided