Zowies first celeritas used Cherry Mx switches but these time they used optical switches. Optical switches are new kind of mechanical switch they are created for faster response time and more durable than other switches. The main difference between Optical and Mechanical switches is Optical switches use infrared light as an input medium rather than electronic signal. When you press the key the prism inside the switch goes down and directs the infrared to the receiver unit to register the keystroke, with this method optical switches avoid the double pressing. The Celeritas II’s keys are liner with a short key travel. You can bottom down and spring back up almost immediately. This feature is really helpful for smashing the same button over and over again in MMO games.
The Celeritas II doesn’t require any software, it is a pure plug and play device which is good for eSports player. On the other hand, some of its feature is restricted to PS/2 users particularly the keyboards response time increaser which is no need for today’s FPS games, still if it is available through USB that will be nice.
Performance wise Celeritas II is fast actuation force in this keyboard is minimal keystrokes are smooth and it’s well built and performs really well in every game.
We used this keyboard as our daily driver for a month within this time we played various games and also spent lots of time typing. Comparing Celeratis against Corsair’s K70 and K70 MK.2 the keyboard is much more responsive for gaming but typing is much more enjoyable in K70. The Celeritas II is priced around ₹12000 in India and $130 in USA which makes it a direct competitor of K70 MK2, ASUS ROG STRIX Flare, Masterkeys MK750, HyperX Alloy Elite RGB, and others all of which offers much better build quality, features, and RGB lighting. Although Celeritas II is a good keyboard, but it feels like it out of its time. A few years ago, Celeritas II would have been a very impressive keyboard with fast optical switches, but now you can get the CherryMX Speed switches which offer the same level of responsiveness with RGB lighting. In today’s market, it’s hard to recommend Celeritas II, though if you are looking for old school no-nonsense keyboard for purely E-sports gaming than you might consider it, but for general gamers there many great options available that offer better feature set.