The Razer Lachesis is Razer’s top-of-the-line wired gaming mouse (not counting the convertible mamba), and is available for a MSRP of 79.99 in either a blue or white glow.
I have wanted to try this mouse out for awhile mostly do to its ridiculous amount of button options and Razer’s reputation for a high build quality. The mouse comes packaged in Razer’s always over the top packaging, including the mouse, driver disc, manual, and quick start guide.
The mouse feels just like you would expect from Razer. It feels solid in your hand and is well weighted for quick movement, which is a plus if your into PVP. It has a gold-plated USB connector for a solid connection which may or may not help transmit the 16-bit wide data path. The mouse has a matte finish which resists dirt and stains from your Doritos stained fingers and provides a textured surface to hold on to when trying to reach the mouse’s 9 buttons.
Installation was a piece of cake. Plug and play picks the mouse up right away and software install took all of 2 minutes. My particular mouse needed the firmware and drivers updated which was also a snap. The process was laid out in the software, and worked on the first try, which is not the case with a lot of firmware updates. The mouse is compatible with both PC and Mac, however the software is only PC compatible at the moment. A quick google search yielded some work arounds so it is still possible to use this on a Mac with the extra buttons.
The software is a bit graphics heavy, but offers all the features you need to setup macros for each button. You can set each button up to simply activate a hotkey, or a serious of button clicks. This is especially nice for healers, as being able to have all your healing spells bound to buttons makes quick healing a snap. I did have some issues with my single button macros causing the button it was bound to to stick until the computer is restarted. As of now, I was unable to find a fix for this, but it has only happened a few times.
The mouse comes with two buttons on either side of the mouse, two below the scroll wheel, your standard two left and right buttons, as well as a clickable scroll wheel. The thumb side buttons are very nicely placed and are easy to press. Unfortunately the same can no be said for the other buttons. The two top buttons would randomly not register while I was healing Ulduar, regardless of how hard or soft I pressed them. The right two buttons are just difficult enough to press that you would accidentally click others in order to gain the leverage needed to use them. The scroll wheel does have a nice firm scroll action which also makes clicking it without scrolling fairly easy.
The mouse software has adjustable profiles allowing you to set up different button layouts for different specs as well as change the polling rate and dpi of the laser. The mouse is capable of up to 4000 dpi and 1000hz polling rate. Depending on your screen size and play style you may want to adjust this down. I found the full polling rate to be too twitchy for healing, especially on 25-mans where the opportunity for misclicking is high. If you also use this for fps or arenas, however, I’m sure the higher polling rate will come in handy. I have found that the laser tends to be super sensitive, and the slightest hair on the laser will throw the mouse for a loop. If you do not clean your computer desk a lot or have animals like I do, it can happen at the most inconvienient times.
Overall I like the Lachesis. While I have my gripes, its still the best solution I have found for mouseover-style healing. It has a lot of customization options, tons of buttons, and a solid build quality that withstands even my biggest fits of nerd rage. Overall, I would have to give it a 3.5 out of 5 stars.
The Skinny:
Pros:
- Tons of Customization
- A Large Array Of Buttons
- Tremendous Build Quality
Cons:
- Some buttons are hard to press
- Macros can glitch out your keyboard
- Oversensitive laser may be a problem for some


