Wired vertical ergonomic USB mouse . The ergo mouse has been designed to avoid twisting of the arm and wrist and thus relieve the user during prolonged use of the mouse. 800 to 2400cpi mouse resolution adjustable on the bottom part. CPIXART 3168 high performance optical sensor. Fiberglass motherboard. 3-Button Mouse. Ultra-strong fabric cable of 59,05''. Material: Glossy and rubber coated black ABS.