Razer Lachesis Laser 4000DPI USB 2.0

4000dpi Razer Precision 3G Laser™ sensor
32KB Razer Synapse™ onboard memory
Nine independently programmable Hyperesponse™ buttons
1000Hz Ultrapolling / 1ms response time
On-The-Fly Sensitivity™ adjustment
Variable true dpi setting adjustments in increments of 125dpi
Always-On™ mode
Ultra-large non-slip buttons
16-bit ultra-wide data path
60-100 inches per second*
Ambidextrous design
Scroll wheel with 24 individual click positions
Zero-acoustic Ultraslick™ feet
Gold-plated USB connector
Seven-foot, lightweight, non-tangle cord
Approximate size: 129mm (length) x 71mm (width) x 40mm (height)