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Razer Lachesis – Mousey Insanity?

Design & Ergonomics

The Razer logo fades in and out during use.

As with most of Razer’s offerings, the Lachesis is shaped symmetrically and therefore, suitable for use by both left and right handed users. The familiar satin black rubberised coating found on buttons previously now extends throughout the entire top of the mouse and the side buttons as well. This allows for front buttons that have a lot less play than in previous Razer mice, making it feel more well-built. Unlike previously Razer mice however, the Lachesis now sports an additional 2 buttons on the top for quick stepped-adjustments of the operating resolution.
With a raised arch on the rear and a narrower center, the mouse is intended to be gripped with the thumb and last finger around the mid-section and the wrist resting on the table. This method utilizes small movements of the wrist to invoke cursor movements.
Indeed, with a maximum resolution of 4,000DPI, it would be hard to rest the entire palm on the mouse and keep it stable unless you possess a Vulcan death-grip. During testing, I found it hard to use the mouse in such a manner and it seems that the mouse would be more apt for users with smaller palms. Otherwise, it would be wise to reduce the operating resolution or the cursor would be flying off the screen everytime it’s lifted and repositioned.


Copperhead sensor (Left) and Lachesis 3G sensor (Right)

The sensor on the Lachesis looks orange-yellow as compared to the Agilent sensor on the Copperhead. However, this is not an effect of visible light emitted by the sensor; it is simply some form of coating on the lens. Aside from offering a whopping 4,000DPI of resolution, this sensor also allows for 60-100 inches-per-second of tracking speed. This means better tracking for those hard and fast swipes you make whilst gaming. Some of you are probably wondering what the “Always-on” feature is; Put simply, it just means that Razer has, unlike other manufacturers, opt not to switch the sensor off to save power. This removes the lag from switching the sensor on from idle mode. Lets take a look at the mouse from more angles before we move on to the software settings.

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