Shower Head Size:20-inch (50cm 50cm). LED is powered by water flow, no need batteries or electricity, safe and reliable. 3 LED colors will change when water temperature change, you can judge the water temperature according the LED color. Less than 30 blue30-40 green40-45 redMore than 45flashing red LED. If you have any questions, please be free to contact with us, we will answer your questions ASAP.I describe items as well as I can. If I have missed something, please let me know. The item "20 Inch Square Rainfall Shower Head Solid Brass LED Colors Changing Top Sprayer" is in sale since Tuesday, April 11, 2017. This item is in the category "Home & Garden\Home Improvement\Plumbing & Fixtures\Shower Heads". The seller is "szzotong" and is located in Dayton, New Jersey. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Turks and caicos islands, Barbados, Brunei darussalam, Ecuador, Egypt, Gibraltar, Iceland, Jordan, Cambodia, Cayman islands, Sri lanka, Monaco, Macao, Maldives, Oman, Peru, Paraguay, Viet nam, Uruguay, Russian federation.