About H2O – RETOO Air Humidifier – Oil Diffuser – USB (2 W)

The RETOO Air Humidifier and Oil Diffuser by H2O is a compact, energy-efficient USB-powered device designed to add moisture and fragrance to your personal space. With a 130 ml water tank and a slim 15 x 10 cm profile, it fits comfortably on a desk, bedside table or workspace without taking up valuable room.

Running at just 2 W, this diffuser is an economical choice for everyday use. Its cotton insert system ensures a steady, gentle release of mist — and when used with your favourite aroma oils, it creates a pleasant, soothing atmosphere in any room.

The straightforward USB connection means the device can be powered from a laptop, USB wall adapter or power bank, making it a versatile companion at home or in the office.

Usage & Setup Instructions

If using the diffuser for the first time, submerge the cotton insert in water for approximately 10 seconds until fully soaked before use.

Unscrew the diffuser, then insert the spring into the tube.
Place the cotton insert with one end into the hole at the bottom of the diffuser, then place the tube with the spring over it. The other end of the insert must be inside the tube with the spring.
Screw the diffuser cover back on.
Connect the power cable and switch on the device.
Before first use, place the absorbent cotton insert into the water container, submerging it as shown in the diagram — it should be fully submerged in water. When the insert has fully sunk, the device is ready for use.