... colors 3. Four colors: blue, green, purple, red LED Shower Hand without battery1. No batteries, no ... between 28°C~38°C,turn PURPLE if the water temperature is between 38°C~48°C,turn RED if the ... temperature is over 48°C.LED shower with CE, ... show automaticallyWhen water temperature is above 48°C, red color will show automaticallyThis item will change its ...