Features:-With the push of a button on the top, you can choose between 4 different amounts of foam, so that the amount of foam can be easily adjusted to the needs of each individual.-The soap dispenser uses advanced smart infrared sensor technology, place your hand on the outlet and it will quickly dispense foam in 0.25 seconds.-There are two installation methods: desktop bracket and wall-mounted installation for you to choose from. Can be hung on the wall without tools or drilling, or you can place it directly on your desk.-Built-in 500mAh battery, after fully charged, it can be used continuously for more than 3 months. When the number of indicator lights decreases, it means the battery is low and reminds you to charge.-Compatible with a variety of liquids,.