Razer BlackWidow Ultimate Stealth 2014

Introducing the new BlackWidow Ultimate Stealth keyboard with the all-new Razer™ Mechanical Switches
Designed from ground up specifically for gaming, it gives you performance that is even closer to perfection. While traditional mechanical switches were designed primary for typing, the Razer™ Mechanical Switch has been designed form ground up for gaming. This means three things are improved from standard mechanical switches: Faster actuation and reset points
Reduced tolerance levels
Greater durability
To do this, our scientists and engineers had to completely rethink the conventional approach behind actuation and reset points of a mechanical switch.
Instead of focusing solely on typing comfort, we prioritized on speed, accuracy, and durability to enhance performance for gaming. Requiring a force of only 50g to actuate, (45g for stealth editions), the all-new Razer Mechanical Switch actuates at an optimal distance of 1.9mm, and resets itself at almost half the distance of traditional mechanical switches.
The Razer Mechanical Switches are ultra-durable and last up to 60 million key strokes compared to 50 million on traditional mechanical switches.
Using a new high precision manufacturing technique, we were able to bring down the tolerance levels of each switch to almost zero, resulting in the most even precise keystrokes across the board with minimal variation.
All New Razer™ Mechanical Switches
Designed specifically for gaming, the all-new Razer Mechanical Switches actuate at an optimal distance, giving you speed and responsiveness like never before.Learn more about Razer Mechanical Switches 
Here
Greater Durability
No matter how intense your gaming marathons get, each Razer Mechanical Switch is engineered to withstand up to 60 million keystrokes, so you’ll enjoy the Razer advantage for longer.
Individually backlit keys
Whether you’re gaming under low-light, or no light, individually backlit keys ensure you never misclick – after all, it could very well be the difference between victory and death.
TECH SPECS
Razer™ Mechanical Switches with 50g actuation force
60 million keystroke life span
10 key roll-over anti-ghosting
Fully programmable keys with on-the-fly macro recording
5 additional dedicated macro keys
Gaming mode option
Audio-out/mic-in jacks
USB pass-through
1000Hz Ultrapolling
Razer Synapse 2.0 enabled
Braided fiber cable
Approximate size: 475mm/18.72” (Width) x 171mm/6.74” (Height) x 20mm/0.79” (Depth)
Approximate weight: 1500g/3.31lbs
System Requirements:
PC with USB port
Windows® 8/ Windows® 7 / Windows Vista® / Windows® XP (32-bit) / Mac OS X (v10.6 to 10.9)
Internet connection (for driver installation)
At least 200MB of hard disk space
Razer Synapse 2.0 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.