No power required: just press the rim of your glass or cup against the star-shaped base to connect the nozzle. Mutual function: the rinser can be stopped once the glass removed. Four powerful water spray holes provide multi-dimensional cleaning. Widely Used: A perfect tool for your bar, restaurant, pub, household, cafe, milk tea shop, etc. Suitable for many types and sizes of glasses/tumblers, such as red wine cup, cup beer mug, coffee mug, milk mug, beverage mug, tea mug, etc. Energy saving: the water saving ability reaches more than 70%, and will not freeze not your hand in winter. Please note that due to manual measurements and display differences, there may be slight differences between individual products and photos.