TopYart Car Diffuser Mini Car Diffuser Essential Oils Vent Clip Cool Mist with Fresh Purification Function, 50ML Ultra Compact Travel Size, with Dual USB charger for Car,Home, Office (Whites) UP TO SPRAY 8 HOURS: 100ml Large Capacity, Two spray modes, Intermittent Spray up to 8 hours! Continuous Spary up to 4 hoursThe diffuser emits a cool mist that adds moisture to the air.This humidifier is Ultrasonic Operation and Ultra-silence Design removes dryness, helps dry skin, lips, sinuses, and coughs. EASY TO USE: The Car Humidifier is durable and easy to operate.Fill your diffuser up with water (add 3 to 5 drops of essential oil.Please do not add more than 5 drops of essential oil, or it will block the air outlet)then plug into your any usb jack swivel your unit the direction you want to spray, push power button and Mist Came Out! No more challenging technology with this purchase. RELAX & WHISPER-QUIET: This humidifier operates at 28 decibels (the operating noise level is even lower than the page turning). Therefore, it can be quietly humidified without disturbing your driving, working or sleeping, away from those nasty noises. The main unit is equipped with 2 USB sockets for charging mobile phones and other electronic products. Compatible with ANY USB device DUAL USB CHARGER:The mini humidifier can be attached to the cord that plugs into the lighter socket is pretty long; Compatible with 1A and QC3.0 USB fast charging, so you can charge for phone, tablet or other devices at the same time AUTO POWER-OFF PROTECTION:The car diffuser humidifier has auto power-off protection function, constant spray for 1h/ intermittent spray for 2h both can turn to standby to protect from dry heating, If you want to keep using, please refill the ingredients and press the touch button again