1.No battery or electricity is needeed, the LED light isworked by water pressure. 2.The LED light changes according to the water temperature. 0oC--30oC isBLUE color ,31oC---43oC isYELLOW color , 44oC---50oC is RED color.Once thetemperature is over 51oC,theRED light flashes to warn that the water is too hot to use 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: gravity casting high pure 62% brass body, zinc-alloy handle, chrome finsih 6.Finish(the thickness of plating layer): , Nickle is above10um, Chrome is 0.25um. 7. Noise level: 18-19db(A) at 3bar with filter 8. Air Leak Test: 7kg 9.Suited Temperature: -15oC--100oC 10. Flux of Hydraulic/kg Pressure: 13.5L/Min 11.Suited Hydraulic pressure: 0.5-22kg 12.Drip free ceramic cartridge for smooth and long lasting operation ,more than 300,000 times for both open and close 13.Quality Certification : CE, ROHS,ISO9001, 14.Comes with 5 year quality warranty ,we promise to replace any defective items free of charge . 15.Complete with water hose , attachment sets & accessories: 2 pcs of G3/8 or G1/2 flexible hoses ,2 pcs of mounting hexagon screw, 1 piece of O Ring Washer,1 piece of horseshoe washer. 16.Customer-tailored service is available ,such as OEM & ODM. 17.High-class workmanship, machined-precisely, each production process is controlled strictly. 18. More than 15 years experience of faucet producing and selling, and we hown the qualification certification of export