Specifications:Case material: ABSLED emitting color: Blue, Green & RedExternal thread diameter: 23.5 mmAdapters diameter :23.5 mmItem size: 32 x 24 mmColor: Silver Light Color:Water temperature : ≤32°C, Blue colorWater temperature: 33°C ~ 40°C, Green colorWater temperature : 41°C ~ 45°C, Red colorWater temperature: ≥46°C, Red Light Flicker