... frequency:50/60H 3-5 minutes fast heating high quality electric faucet :Advantages:1.Save electricity:This product ... heat loss.However,by using ordinary storage water heater,the pipe heat loss can reach 10% to ... 15%.2.Save water:Ordinaty storage water heater pipe laying a long,and pipe out the ... installation,no need plumber,just one minute.5.High quality,using convenient,the function is all ready,very ...