Razer Mamba 4G 

Mouse / Laser / U Wireless Combination / USB / General / 4000 or more DPI / 7 buttons / down / DPI changing / anti-tangle cable / LED Tuning Products / Ergonomic design / 4G Dual Sensor / 1,600 million multi-color LED / 1ms response time / 50G acceleration / Always-On mode / gold-plated USB connector / 16 hours of continuous use battery / charging dock features a dedicated wireless receiver / 2M fabric cable / change DPI: adjusting to the support program, two button tops