LED quantity: 24 LEDs Casing Color: blue Casing Materail: PMMA Maximum size: 200*25.5mm Lighting Color: 1.Single Color (7 color for choosen) 2.Mutiple colors (The light can change one color every 3 to 5 seconds so that the rainbow colors are showing gradually.) 3. Tempareture detectable (A. When water temperature is ≤32°C, Green color will show automatically; B. When water temperature is between 33°C~41°C, Blue color will show automatically; C. When water temperature is between 42°C~45°C, Red color will show automatically; D. When water temperature is above 46°C, Red color will flash immediately.)