Two power supply modes: one is USB power supply, the other is battery power supply(Without 3 x NO.1 batteries) Greatly improve air quality: In addition to its use in aromatherapy, this essential oil diffuser can also be used as a humidifier. Using it can improve the air and atmospheric quality of , cover up the smell of pets or smoking, and protect your family from excessive dry air, microorganisms, , dust, etc.! High-quality: For our high-quality essential oil diffusers, we only use the same super high-grade, safe and environmentally friendly materials, as well as advanced production processes and quality control. Great gift ideas for everyone: If you need beautiful and practical gifts in the market, you can stop looking for them. This great aromatherapy essential oil diffuser is a thoughtful and convenient gift that everyone can advantage from. The combination of style, design and function is really great! Suitable for places with a range of 500-1000m,Shopping malls, KTVs, hotel lobbies, cinemas, etc. colour: black Material: ABS Package Contents: 1 x Aroma Diffuser 1 x USB cable 1 set x installation accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.