Use mechanical Precision Welding Technology,which makes the life of the heating tube longer. Do not worry about WATER LEAKAGE, DRY BURNING, FASTER HEAT DISSIPATION,NOT EASY TO SCALE.The outflow way and the electric circuit is separated, but connected by a tunnel for leak resistance of both water and electricity. The plug and the adapter can betterly fit your socket. ways for easy installing, you can arrange wires both up and beneath the washing stand, like what you used to do with your other faucet taps. No professional installment tools requirement.Note:1. Please Allow 1-3mm Differs Due To Manual Measurement.2. Due To The Different Display And Different Light, The Picture May Not Reflect The Actual Color Of The Item. Thanks For Your Understanding.