Application environment: bedroom, hotel, office, car Unlimited capacity design [without bottle] You can use the bottle according to your own needs Two spray modes: continuous spray 40ml/h, intermittent spray 25ml/h It can be long or short to meet different humidification needs; Noise reduction design, running less than equal 30db Tips:Please make sure the cotton core has fully soaked on both ends before turning the humidifier on. Product size: 138MMx51MMx30MM Power supply mode: USB power supply Spray volume: 40ml/h Product features: large fog volume, small and portable, small night light, silent humidification, unlimited containers Product function: ultrasonic atomization, moisturizing with large amount of fog, moisturizing with micro-molecules, increasing air humidity, night light, automatic protection (anti-dry burning) Humidification efficiency up to 99%, spray volume up to 40ml/h Do you have any problems with being dry? Room Air Conditioning: Evaporates moisture and dries the skin Hot weather: moisture loss, enlarged pores Computer radiation: oily skin, large pores Lack of sleep: clogged pores, dullness Colour:White Material:ABS+pp Package Contents: 1 * USB Mini Air Humidifier(Does not include the bottle shown in the picture) Only the above package content, other products are not included. Note: Light reflection 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.