Features: Tracking method:Optical sensor technology Connect: USB 2.0 plug&use; Cable lenth: 1.5M with Toroidal braided cable Counterweight suitable for gaming user Choose ABS material for the mouse coat. Button life: 10 million clicksChipset:603EPLED: 7 Colour backlightLong Press DPI - button 3 seconds to turn off or turn on led light; Specifications: Material:Plastic Mouse Size:Approx.12.4x7.1x3.9cm/4.88x2.8x1.54in Keyboard Size:Approx.29.2x10.2x4cm/11.5x4.02x1.57in Input Power:5V Power Consumption: 100mA Pooling rate :125Hz FPS:Max 4000Fps Accelerated Speed: 8G IPS:30inch/sec Buttons:Left/Right/Middle /forward/back/DPI +/DPI- DPI:1200-1800-2400-3600DPI(4 DPI stages) Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Gaming keyboard 1x English User manual