Insert the wider side of the mask tab into the crescent-shaped cut-out on the lid near the spout, then press it in until it snaps into place—it’s recommended to try the intra-nasal mask first. Check the underside of the lid to make sure the mask’s circular tab sits completely flat; if any edges are curled, gently pull them through until smooth.
Next, push the gasket’s spout through the hole on the underside of the lid until it’s fully pulled through and sits flush. Insert the straw into the gasket socket until secure.
With the electronic base disconnected, fill the cup with water up to the 100 mL mark, tilting the cup slightly to pour along the side and avoid spilling through the center hole. Press the lid assembly firmly onto the cup, then tilt it slightly to ensure no water leaks and confirm the outside is dry.
Place the cup assembly onto the electronic base and turn it clockwise while holding the base until it’s tightly secured. Finally, align the cap with the spout and press down until it clicks into place. The device should be used without the cap—only attach it for storage.