BIDET4ME, MB-2000, Cold and Hot Water Spray Non-Electric Mechanical Bidet Toilet Seat Attachment "Dual Nozzles" Adjustable water pressure and water temperature (high, middle and low) as well as choose nozzle (for man and woman) base on your preference You do not need electricity from AC or battery required Very Easy and quick self installation (Most people take 20~30 minutes) Retail package includes all DIY accessories (no additional tool required) Build in good quality and super great value for money you spend