DV Hardware has published a review of the Lachesis gaming mouse from Razer.

The Lachesis is a gaming mouse with a 4000DPI 3G laser sensor, up to 100 inches per second tracking, nine buttons, 1000Hz ultrapolling with 1ms response time, 32KB of onboard memory for your gaming profiles, and on-the-fly sensitivity adjustment. Razer names many of its products after dangerous creatures, and this gaming mouse is no different, the South American bushmaster (lachesis muta) is the largest pit viper in the world.

Razer Lachesis mouse Review