Note: No. 01-20 Humidifiers Are Equipped With Remote Control And Timing Functions. No. 01-20 Humidifiers All Use Plugs For Power Supply. Please Look For The Plug That Is Suitable For Your Country When Purchasing, No. 21-22 No. Product Does Not Have A Remote Control Function, And Is Powered By Usb! Note: The Remote Control Is Not Equipped With Button Batteries. Buyers Need To Purchase And Install Them After Receiving The Goods. No. 01 -20 Product Parameters 7-Color Night Light. Le Than 30Db Noise 30Ml/H Spray Volume Plug Power Supply Timing Off Function Plastic Shell With Remote Control No. 21-22 Product Parameters 7-Color Night Light. Le Than 35Db Noise 30Ml/H Spray Volume Usb Powered . 130Ml Water Tank . Touch Switch . Plastic Shell Compact Size For Space-Saving: Without Occupying Much Space, You Can This Diffuser On Your Desk, Countertop, 2 Misting Modes: You Can Set It To Intermittent Mist (6-10 Hrs Working Time) That Diffuser Mists And Pauses Every 10S, It Goes For Almost The Whole Night; Or Set It To Continuous Mist (3-4 Hrs Working Time) That Keep Misting Until Water Runs Out, It Creates An Instant Fragrance In Your Room. Pp Material And Cool Mist: Using Pp Material, This Diffuser Disperses A Comfortable Stream Of Room-Temperature Mist, Which Provides Ideal Coverage For Small Or Medium Sized Room. Colorful Mood Light: This Eential Oil Diffuser Has 8 Soothing Colors, Light Can Switch From Dim To Bright. Great For Creating Atmosphere, Meditation, Or Using As A Night Light. Waterle Auto-Off: You Can Enjoy A Restful Sleep And Keep This Diffuser On At Night Without Worrying About Overheating. The Diffuser Will Automatically Shut Off Once The Water Runs Out.