I installed this about 5 years ago and it worked great for about 4 years. Buttons  started to stick and I would give it a tap and they would be fine. Soaked it in a calcium scale remover and it worked great for another year. Water is very hard in this location.  Started to happen again and I found the warranty phone number and they were great and I will get a new spray head by UPS. Time line is fine, hold time was fine under todays, April 3 2020, conditions.