Features & Specifications
The biggest feature of the Razer Lachesis is the 4000 dpi 3G laser sensor. The Lachesis has on-the-fly adjustable sensitivity like other gaming mice on the market and nine independently programmable Hyperesponse buttons. The cool part about the Lachesis’ adjustable sensitivity is that none of the settings are achieved through software interpolation. All settings are real and true DPI settings. The polling time can be set at up to 1000Hz providing as 1ms response time.

The Razer Lachesis uses an ambidextrous design so all gamers can use the mouse. Razer’s always on mode keeps the mouse form going to sleep so it is always ready to play after long cut scenes without lag of any type. Compatibility is with Windows 2000, XP, X64, MCD 2005, Vista and Vista 64.

Razer’s mice tend to be long, and the Lachesis is no exception, though it feels comfortable in the hand. The cable is 7 feet long and designed to be non-tangling. The Lachesis will be available in two colors eventually, with Phantom White the only option currently available. In December, a Banshee Blue Lachesis will be available as well.

Gaming with the Lachesis
In use, the 4000 dpi is great for me since I prefer high sensitivity. The Razer Lachesis is very accurate and tracking is great. I used the Lachesis for playing lots of Crysis. The high-sensitivity settings were perfect for fast turns and the mouse was very accurate from close range and long distances. Tracking fast moving targets was a snap and the adjustable sensitivity was welcome.

The Lachesis is good for things other than gaming too. I very much like how little hand movement it takes to navigate around my 30-inch display and around web pages with the mouse. When I use Photoshop the accuracy allows me to pick specific points for cropping images with ease. The layout of the buttons is very good for the most part. The way I prefer to grip a mouse puts the buttons on the right side out of comfortable reach.

The buttons on the left side of the mouse fall exactly where my thumb typically rests when I game. Normally when that happens they end up being clicked accidentally. However, the buttons on the Lachesis require more than an accidental touch to activate them. You have to want to use those buttons, which is a good thing. When you do want to activate the side buttons they are easy to click and offer good tactile feedback.

The Razer drivers allow you to turn the lights behind the scroll wheel and the Razer logo on or off as you desire. The drivers are very good, as is typical for Razer. You can map different profiles inside the drivers for specific games. 32KB of onboard memory allows the mouse to store the profiles for use on computers without software installed. A button on the bottom of the Lachesis allows you to change the profile to your preference.

The buttons for adjusting sensitivity are directly under the scroll wheel. If you don’t normally change your sensitivity settings while playing a game, you can bind these two buttons to other game commands. The main thing I miss after changing from the Logitech G9 to the Razer Lachesis is the scroll wheel on the G9. I wish Razer would offer some sort of free wheel scroll system like Logitech uses for normal computer work. The Lachesis sells for $79.99.