ChungHo Slim Water Softener S500 with a width of 11.5cm is Korea’s slimmest water softener. The three water settings – for softened water, mixed water, and hard water, – allow users to easily select the water setting they prefer, and its temperature-sensitive LED indicator shows users the exact water temperature. It comes with an indicator showing when to clean the brine tank using the simple automatic cleaning system at the touch of a button.