Features:
No battery is needed
When water flows down, the LED will light instantly and automatically
The LED color will change gradually and automatically as the temperature of water increases.
When water temperature is below 31 centigrade, green color will show automatically
When water temperature is between 32-43 centigrade, blue color will show automatically
when water temperature is between 44-50 centigrade, red color will show immediately
When water temperature is beyond 51 centigrade, red color will flash immediately

LED Color: Blue/Green/Red
Material: ABS
Surface Treatment: electroplating
Shower head diameter: 9cm
Screw connection inner diameter: 20mm

Package included:
1 x 3 LED Colors Changing Bathroom Shower Head