The ergonomically formed body of fireglider laser mouse fits comfortably in your hand and thumb pad for good grip even in hectic situations with the weight tuning system at the bottom of the mouse the weight can be adjusted over seven levels from 118 g to 135 g maximum and thus fits to individual needssix of the seven buttons can be freely programmed and assigned functions using the enclosed software which simplifies gaming as well as your daily working with the pc moreover you can create c