1.[Small Size But Powerful Mist Output]: The ultrasonic aroma diffuser is mini and cute, about 4.4 inches at widest and 4.6 inches at highest. You can easily place this palm-sized diffuser on your bedroom, desktop or in a travel backpack. Meanwhile, the mini essential oil diffuser make full use of the space with a water tank 180ml, and the high-performance atomizer plate dissolve water and essential oils into continuous fine cold mist 2.[Quiet & Two Mist Modes]: ultrasonic technology supports super quiet working noise <20 db. You hardly hear the noise. The aroma diffuser humidifier has 2 mist modes: 1.continuous mist(6 hrs working time) that keep misting until water runs out; 2.intermittent mist (12 hrs working time)that diffuser mists and pauses every 15s. The ultrasonic essential oil diffuser can last all night and quietly creates moist fragrance air for you 3.[Wood Grain Appearance + 7 Colorful Lights]: The aromatherapy diffusers are made of high quality material(ABS+PP) with a faux wood grain hollow-carved appearance and the LED lights can smooth switch from gradient light to separate light. The classical and minimalistic small essential oil diffuser with light is perfect choice for creating atmosphere, meditation or using as a night light 4.[Waterless Auto-off function]: Aroma therapy diffuser will turn off automatically when water runs out for your and the protection of the aroma diffusers as well. It definitely can keep you in when you are sleeping or out of home. Wood grain aromatherapy essential oil diffuser, cute essential oil diffuser electric, cool mist humidifier diffuser,USB essential oil diffuser small room