The integrated water line design is to reduce the leakage after installing. Twist & turn quick change and disposable cartridge, gives you a convenient and hygienic experience, customers can replace the cartridges by themselves in seconds. The auto stop water design which can help you change the cartridges without turn off the water.The LCD display of the 2 Stages Big Flow Water Filter shows the filter and battery status and alerts you with a beep when it's time to change cartridges.