Transparents observation window: A transparents window is set on the side to facilitate real-time viewing of the remaining amount of liquid and timely replenishment Easy to operate: It can be operated with a hand, for children and the elderly, and particularly friendly Moderate capacity: Reasonable capacity design to meet the daily needs of family members and reduce the trouble of frequent liquid refills Simple installation: Without tools required, easy and quick installation, suitable for use in different scenarios Easy to clean: The surfaces is smooth and easy to wipe and clean, keeping the product always cleaning and new