W4-S1 features:

3.2L capacity

Stainless steel barrel and stainless steel water tray design

5000mA lithium battery life, true wireless use

Easy to clean and assemble

Simple operation

80 days of battery life with 100 sensing times per day (theoretical value, actual test results required)

Low battery reminder

Lithium battery separation design

Power off when out of water, protect water pump

Filter element 4-layer filtering function

Infrared sensing, sensing distance about 2m, sensing angle 120°  

Package

1*water dispenser 1*filter, 1*charging cable