SHIMANO's SLX DC HG is designed for effortless casting in all conditions. The DC braking system means: this reel has 'brains'. The DC system calculates the correct braking force 1000 times per second to avoid backlash while optimizing throw distance and accuracy. It makes fishing with a baitcasting reel very easy and effortless. You don't have to change the reel settings when the weather or lure changes, the DC system does it for you. This results in more efficient fishing time and focus for the angler. And the best news is for the fishermen