The Razer Lachesis gaming mouse originally launched in 2007, with a dramatically curved, ambidextrous design and a 4,000dpi sensor. Three years later, Razer has released a new Lachesis, which is not so much a sequel as a refinement of the original. The most important change in Lachesis 2.0 is the 5,600dpi sensor, which puts it on par with other top-end gaming mice. We don’t usually play at such a high sensitivity, but we tested it at dpi levels across the whole spectrum and found the Lachesis responsive and reliable. The other new addition to the Lachesis is custom-color lighting. That means that (after downloading the Lachesis driver) you can change the color of the glowing scroll wheel and Razer logo to whichever of the 16 million possible shades you fancy most. Earth-shattering? Not exactly, but it is nice that you can match your mouse’s glow to your keyboard or any lights your various hardware might emit.