Ultrasonic essential oil diffuser and air humidifier with 300ml capacity, portable USB-powered mist maker for home, car, office, and bedroom, compact 115mm size in black, green, pink, or white ABS plastic casing
Portable Ultrasonic Diffuser Humidifier with 300ml Capacity and USB Power for Car and Home

This compact ultrasonic device serves a dual purpose as an essential oil diffuser and air humidifier, designed for small, personal spaces. Its 300ml water tank provides a practical balance between capacity and portability, making it suitable for use on a desk, bedside table, or in a vehicle. Powered via a standard 5V/1A USB connection, it offers flexibility to run from a laptop, power bank, or car adapter. The unit generates a fine mist at a rate of 30ml per hour and includes timer settings for 4 or 8 hours of continuous operation before automatic shut-off. Available in black, army green, pink, or white, it presents a simple solution for adding moisture to the air and dispersing scents where mains power is inconvenient.
Features and Construction

Built for straightforward operation and easy portability, this diffuser combines a specific set of technical specifications with a simple user interface.
Material and Build
The outer casing is made from ABS plastic, a common thermoplastic polymer known for its impact resistance and suitability for injection moulding into precise shapes. Silicone is used for certain components, likely for seals, buttons, or flexible feet, benefiting from its temperature stability and water resistance. The internal assembly consists of electronic components required for the ultrasonic vibration mechanism that creates the mist and for the control circuitry managing the timer and power.
Size and Practical Fit
With dimensions of 115mm in height and 68mm in width and depth, the unit has a notably compact footprint, comparable to a large coffee mug. This size allows it to fit on crowded surfaces like car dashboards (where secure placement is advised), office desks, or narrow bedside shelves. The gross weight of 180g, including packaging, and a net product weight of 150g confirm its lightweight nature, which aids portability. The packaging itself is a modest 70mm x 70mm x 118.5mm box, indicating a retail-ready presentation that is easy to store or transport.
Uses and Placement

The product's specifications guide its ideal applications, focusing on environments where space and power access are limited.
Event or Professional Use
For professional or event settings, such as a therapy room, small salon treatment area, or a market stall, the USB power capability means it can run discreetly from a shared power strip or a portable battery pack without requiring a dedicated mains socket. The 4 and 8-hour timer settings provide control over the duration of operation, which can be aligned with appointment lengths or opening hours. The range of colour options—black, army green, pink, and white—offers a choice to match different decor themes or branding schemes.
Everyday Home Use
In domestic environments, it functions as a personal humidifier for a bedroom to combat dry air from heating systems, or as a compact diffuser for creating a relaxing atmosphere in a study or nursery. The 300ml capacity and 30ml per hour output mean a full tank can provide approximately 10 hours of continuous misting, covering a full night's sleep or a long workday when used with the timer. Its size makes it suitable for children's rooms, student accommodation, or as a secondary unit in a main living area where a larger humidifier is already in use.
Benefits and Buying Value

The value of this product lies in its specific combination of portability, controlled operation, and dual-function design.
Reuse and Low Maintenance
The device is designed for repeated use, with a water tank that can be refilled as needed. The low 2W power rating indicates minimal energy consumption during operation, which is cost-effective for prolonged use. Maintenance is straightforward, centred on regular cleaning of the water reservoir to prevent mineral buildup and wiping the exterior. The lack of complex filters to replace contributes to its low ongoing upkeep requirements.
Why Choose This Product
This diffuser-humidifier stands out for users who need a device that functions away from mains power outlets, particularly for in-car use or in rooms without spare sockets. The inclusion of two timer options (4 and 8 hours) offers more control than models with only a single setting or no timer at all. The clearly stated mist output of 30ml per hour and the 5V/1A power specifications allow buyers to match the product's performance to their specific needs, such as the size of the space or the capacity of their USB power source.
