Specification: _x005f_x000D_ Brand: ZELOTES _x005f_x000D_ Model: F-17 _x005f_x000D_ Color: Black _x005f_x000D_ Number of keys: 6 _x005f_x000D_ Tracking system: Optics _x005f_x000D_ Frequency: 2405mhz-2476mhz _x005f_x000D_ Effective distance: 10m _x005f_x000D_ Working voltage / current: 3V 4mA _x005f_x000D_ Key life: 3 million times _x005f_x000D_ Roller life: 1.2 million revolutions _x005f_x000D_ Resolution: 1000-1600-2400dpi _x005f_x000D_ Rate of return: 250Hz _x005f_x000D_ Battery type: 1 * AA battery (not included) _x005f_x000D_ Product size: 134 * 96 * 83mm _x005f_x000D_ Box size: 123 * 93 * 93mm _x005f_x000D_ Product weight: 100 g _x005f_x000D_ Gross weight: 165 g _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-3cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 X Mouse   _x005f_x000D_ 1 X Hand Holding   _x005f_x000D_ 1 X Receiver _x005f_x000D_ 1 X 10 Country Language Manual