The BlackWidow Ultimate keyboard is perhaps the most eye-catching of the three, and it appears similar to Corsair's RGB-backlit K70 and K95
keyboards with per-key lighting. The difference is in the details of
course, and Razer uses their own custom Green/Orange switches, so the
feel will be slightly different from the Corsair models. The DeathAdder
and Kraken aren't quite as advanced, in that there are fewer backlights
available – the scroll wheel and Razer logo on the DeathAdder are linked
to the same color, while the ear cups on the Kraken are likewise
linked. One interesting feature however is that all three devices can be
synchronized via Razer's cloud-based Synapse software.
Like other RGB backlit devices, Chroma in theory allows up to 16.8
million colors, though as we've noted before overlap among the colors
means the "useful" palette is going to be more like 20-40 colors.
Besides selecting individual colors, Razer offers several effects for
colors as well. Spectrum cycling is for those that want to show the full
rainbow of colors, while breathing causes the backlight to pulse one or
two colors on and off every seven seconds. The BlackWidow keyboard
offers several additional options, including the ability to customize
each individual key and save/load templates optimized for various games.
Reactive mode causes the individual keys to light up when pressed and
then fade out with three time delays for fading to black (slow, medium,
and fast), and finally there's a wave effect that cycles the colors on
the keyboard in a wave.
Razer has a web demonstration showing what the various effects look like, or you can watch the promo video on YouTube.
Razer will also be providing an open Chroma SDK to allow game
developers and users full access to the devices, providing the potential
for an even deeper level of customization (e.g. reactive mode with
multiple colors should be possible). Pricing for the devices has not
been announced, but both the Chroma-enabled devices will be available
starting in September 2014. The Chroma SDK meanwhile is slated for
release in "late 2014".
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