From the Manufacturer
https://www.razerzone.com/store/razer-blackwidow-chroma-v2
Brand
RAZER
Name
Blackwidow Chroma V2
Model
RZ03-02031600-R3M1
Keyboard
USB
Design Style
Gaming
Palm Rest
Yes
Yes
Keyboard Color
Black
Backlit
Yes
Dimensions
2.92" x 19.70" x 10.24"
Wired
Mouse
Mouse Included
No
OS / System Requirement
Operating System Supported
Windows 10 / Windows 8 / Windows 7 / Mac OS X (v10.8 - 10.11)
System Requirement
PC or Mac with a free USB port
Internet connection
100 MB of hard disk space
*Razer Synapse registration (requiring a valid e-mail), software download, license acceptance, and internet connection needed to activate full features of product and for software updates. After activation, full features are available in optional offline mode.
Features
Features
Multi-Award Winning Razer Mechanical Switches
Engineered for durability
Razer CHROMA Backlighting with 16.8 million customizable color options
Ergonomic wrist rest for extended gaming comfort