The most consistent complaint about water filters is the amount of effort and time required to get potable water. AohkÃÃ is a water retrieval system that efficiently utilizes human input to supply water via the on-demand bottle and the hand crank filter. The water filter pump utilizes mechanical advantage with both a hand crank and beveled gearing.Â With this method, the user can filter more water with less effort. The water flow through the system remains constant without clogging since it is a ceramic filter.Â Modeled after a coffee press, the bottle filters water by directing water up through the center ceramic filter and into the interior nested bottle. Pressing the interior bottle into the outer bottle until the lid contacts both surfaces, turns on the three ultraviolet lighting strips.