1.No battery or electricity is needeed, the LED light isworked by water pressure. 2.The LED light has three primary colors and changes with the water temperature. 0oC---30oC is BLUE color ,31oC---43oC isYELLOW color , 44oC---50 oC is RED color.Once thewater temperature is over 51oC, theRED light flashes to warn that the water is too hot to use.(we may also produce this faucet with only with one color or other colors) 3. The LED light only glows when you use the faucet,so it's energy-saving and environment-friendly. 4. It's very interesting and easy to use, just as other normal faucets 5.Materials: ABS plastic,chrome finish 6.Finish (the thickness of plating layer): Nickle is above 10um, Chrome is 0.25um 7.Accessory: the unit FOB price of 1.5 m long string pipe (flexible hose) is USD 2, other length pipes are also available. 8. Noise level: 18-19db(A) at 3bar with filter 9. Air Leak Test: 7kg 10.Suited Temperature: -15oC-100oC 11. Flux of Hydraulic/kg Pressure: 13.5L/Min 12.Suited Hydraulic pressure: 0.5-22kg 13.Quality Certification :CE, ROHS,ISO9001 14.Comes with 5 year quality warranty, we promise to replace any defective items free of charge . 15. Customer-tailored service is available ,such as OEM & ODM. 16.High-class workmanship, machined-precisely, each production process is controlled strictly. 17. More than 15 years experience of faucet producing and selling, and we own the qualification certification of export