Bundle details: 1. Machine Only = machine only + 1x cotton filter (no warranty & bubble wrapping). 2. 1 x 3ml aroma bundle = machine + 1x3ml aroma + 1x cotton filter +bubble wrapping (2 weeks warranty). 3. "Ag+ Complete bundle" = machine + 2x3ml aroma + 1x cotton filter + Ag+ filter, bubble wrapping (2 weeks warranty). 4. "Accessories Bundle" = 2x cotton filter, 1x USB Fan, 1x USB Light, 1x 5ml aroma. Specification: Name: Portable ultrasonic humidifier Capacity: 270ml Size: 70 x 60 x 150mm Cotton Filter length: 13.5cm Power Input: Micro USB Built Material: ABS Aroma: Water Based Aroma / Air purifier solution Filter: Anti bacteria Filter, *Optional Ag+ ionic Filter Special Function: Small and easy to use, can put in car or any small spaces.