Product Specifications: 1. Size: 124 x 85 x 38 mm (4.9*3.3*1.5 inches) 2. Weight: 88g (3.1oz) 3. Optical type: Red wave 4. Adjustable DPI: 500/1000/1800/2500 5. Polling rate: 250Hz 6. Buttons: 6 7. Maximum Acceleration: 20G 8. Frame Rate: 3000 Frame / sec 9. Wireless type: 2.4GPacking Content: 1 x E-3lue Mazer wireless mouse 2 x AA Batteries