The Sector Watch Company, based in Italy, is known for its sporty timepiece styles. Sector Watches come in two collections; each also has sub-collections. The Sector Expander Collection features Street Watches, Cardio Watches and Outdoor Watches--all with specific functions relating to their category. The other Sector Collection is called "No Limits" and features Racing, Marine, Mountain, Urban and Contemporary Watches, again with functionality relating to the timepiece class. Within all these categories, the most popular Sector watch functions based on online retailers are the chronograph, the dual time and the ana-digi.

Most chronograph watches have screw-down crowns for water resistance. You must unscrew the watch crown before you can make any changes to the watch time. After time is set screw the crown back in. To utilize the chronograph dials, use the buttons on the side of the watch. One button will be for the second timer. Press once for the second hand to start timing. Press again to stop it. Another button will be to reset the second hand timer back to zero. Sector Chronograph watches may have different dial functions (see link in References).

Because Sector watches are known for their sports capabilities, the Dual-Time watches have screw-down crowns. For Dual-Time timepieces, unscrew the crown counterclockwise. Pull the crown to middle position to set the date. Pull the crown out to its fully extended position and rotate it to set the day of the week, hour and time. Press and hold in the crown and turn clockwise to seal the crown back in to the watch.

Sector Ana-Digi timepieces have analog hands plus digital timekeeping functionality. To set the time, unscrew the crown counterclockwise and then clockwise to the appropriate time. The digital functionalities are programmed by the buttons on the side of the case. Depending on the style of the Sector watch, you can set the digital time with one button, set the date display, 1/100 seconds chronograph timer, altimeter, thermometer and alarm functions.