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This is a dual-purpose portable water bottle, bottle elliptic cylindrical volume occupied small portable sandwich in the middle of the bottle can be installed two liquids in order to meet the different needs of the people, caps in the upper-left corner of the bottle can be rotatedunscrew the bottle top part can be moved directly to the cap is screwed down to drink a beverage, push further to the right you can drink another liquid intakes in the bottom of the bottle, the roundabout at the bottom can be screweddown, poured into the two different liquids. Dual-use portable water bottles will enrich people's lives.