The patented Biffy rinse technology was developed and tested by doctors and nurses to assure you the most hygienic personal cleansing possible featuring a bidet nozzle that comprises 8 individual water streams and a simple lever that allows you to adjust the water spray pressure and position that best fits your unique body and cleansing needs. The Biffy bidet nozzle is self cleaning and will never contaminate your sensitive areas. Every Biffy bidet product is hand tested prior to shipping to ensure quality, ease of installation and comes with a 1 yr warranty. The UNIVERSAL, CHROME, BUTTLER and BUN WARMER product models come with a 90 day money back satisfaction guarantee.