Adesso iMouse E1 - Vertical Ergonomic Illuminated Mouse - Optical - Cable - Glossy Black - USB - 1600 dpi - Scroll Wheel - 6 Button(s) - Right-Handed Only - IMOUSE E1

Ergonomic Vertical Design - The vertical design provides better support for your forearm minimizing wrist pain that can come from twisting
50 Degree Vertical Angle - The “hand-shake” grip helps reducing muscle stress and risk of Carpal Tunnel Syndrome
Durable Micro-switch - Up to 10 million times lifecycle
Adjustable DPI Switch - Adjustable cursor moving speed from 800 1200 to 1600 DPI
High-precision Optical Sensor - Tracks accurately and precisely on different surfaces like marble wood and leather surfaces