Hours of working with the computer mouse often causes a unnatural posture and pain. LogiLink’s scientific advanced ergonomic computer mouse has natural hand positioning which eases hand and wrist tension.2.4 GHz FSK autolink technology Ergonomic design conforms naturally to your hand and wrist movements Precision optical sensor Adjustable DPI: 1000/1200/1600 dpi 5 Standard buttons + 1 DPI shift button Range: Up to 10m 2x AAA Alkaline batteries General product data: Weight: 0.085 kg Height: 6.1 cm Width: 7.9 cm Length: 10 cm