it has a larger capacity, double filtration.automatic water replenishment, energy saving.2.8l drinking water can be installed to meet the drinking demand of 3-5 days.built in filter cotton makes drinking water healthier.Transparent drinking fountain, automatic water replenishment, easy to add water.Environmental protection PP material, healthy, durable, keep drinking water clean.Rotary click point combination, sturdy installation and easy to overturn.Non-slip base, more at ease of use.Model No: ESG12682