The Package

Much like its predecessor the revamped Lachesis ships in a colorful cardboard box.


The bundle is a little sparse. You only get a manual and small ad for other Razer products. No extra mouse feet or anything useful is included in the bundle, not even a driver CD!


Like the other high end mice from Razer the new Lachesis features a braided cable and durable USB connector. The braided cable has its pro’s and con’s. It is slightly more durable than a standard PU type cable, but it is also quite a bit stiffer.

Closer Examination

Exterior wise not much has changed since the original mouse was designed. The only noticeable changes on top are the rubberized side buttons and the new scroll wheel design. Plugged in, the mouse allows you to alter the color of the scroll wheel and logo illumination which is great if you are into modding.


The shape of the Lachesis is still highly debatable. The shape is definitely good if you use only the tip of your fingers to control movement and have a regular size hand.


From the side you can see the odd downward slope near the cable end of the mouse. This is one of the main differences between the Lachesis and the now obsolete Diamondback and Copperhead mice. To these hands the older less complex shape was better ergonomics wise, however, the general widening near the cable end of the mouse means that the thumb buttons are much more accessible.


The bottom layout has gone through a ninja makeover. Everything appears to look the same, the profile button is the same, the sensor looks the same but behold a little innovation near the sensor. Razer have effectively cured the issue with plastic dragging on soft mats by simply placing a piece of teflon around the sensor mount, this should also decrease the Z-axis tracking effects on soft mats. Besides that there are very few tweaks to the exterior design of the bottom part. Unlike many of the competitors Razer still do not offer a customizable weight system. Such customizable systems are perhaps the greatest design paradox on high performance mice, in order to make room for the weights circuit boards are often divided or stacked on top of each other compromising the balance of the mouse, and ultimately making the mouse less durable because it compromises the shell integrity.


The two assignable buttons south of the scroll wheel are by default used to control the DPI setting of the sensor. This setup works quite well for FPS games where you do not need that many buttons. I suspect that for RPGs you will be better off assigning some alternative functions to them. The position means that they are quite easy to access.


One of the welcome changes on the new generation of Lachesis mice is the new scroll wheel. It feels way better and gives you a more distinct tactile feedback.