Razer DeathAdder Ergonomic PC Gaming Mouse (Certified Refurbished)
http://www.amazon.com/gp/product/B00N12OIPC?tag=sukses2015-20

This Certified Refurbished product is manufacturer refurbished shows limited or no wear and includes all original accessories plus a 90-day warranty
6400dpi 4G Optical Sensor
Improved ergonomic side grips
Razer Synapse 20
Intuitive ergonomic design