The switch starts and senses the ight screen of the human machine to reach out the liquid to avoid the automatic liquid of the machine. The double protection is only for giving you a better use experience The innovative water tank structure is drip proof and leak proof, which is different from the traditional wall-mounted washing mobile phone. The horizontal and flat water tank design is scientific and leak proof, so that the lavatory table is kept clean and tidy every day High-definition large screen people to both ight working state at a glance time display, indoor temperature, current gear, low fluid prompt induction of people, lack of power prompt, full power prompt The 450ml large capacity water tank can be used for a family of three for 60 days 60 days on a single charge. 2000 mah lithium battery lasts 60 days Colour:White / Black Material:ABS Package Contents: 1x Automatic Soap Dispenser 1x Mounting Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.