Intelligent Digital Control braking system with an easy to use, 4 modes can be set using the external dial for Max Distance, Braided/Mono line, Fluorocarbon line and Skipping for you to place the lure at those hard to reach places. This will allow anglers to fish a wide variety of lures, in any conditions, with minimal adjustment to the reel. I-DC4 reads various situation changes from casting to arrival of lure at target spot through the reading of the spool's rotation and makes fine adjustments to the brake accordingly.