2020 Upgraded 3 in 1 Humidifier Cool Mist Humidifier Small Portable Humidifier 300ml with 7 Colors LED Night Light for Bedroom Ultra Quiet with Cute Bear for Baby Room Car Office

Mist Spray Control: 1, First click the button to turn on the humidifier, it will be the continuous spray mode first, the ambient light flashes for seconds and then goes out, 2, Second click the button again to switch to the intermittent spary mode, 3, Third click the button to turn off the humidifier. Ambient Light Control: 1, First click the button to turn on the humidifier, it will be the continuous spray mode first, the ambient light flashes for seconds and then goes out, 2, Long press the button and hold for about 5 seconds during the continuous spray or intermittent spray the ambient light will start and switch among 7 colors, 3, Long press and hold for about 5 seconds again to turn off the lights. For Cotton Swab: Actually there is no need to replacement if the cotton swab and the whole humidifier works well. We sent the free-gift cottton swabs in the package in the purpose that occassionally the cotton swabs cannot fits the ultrasonic mechanism well the device would not work so it needs replacing. And sometimes some clients add TOO MUCH oil essential(but not the suggested drops of essential) which would shorten the cotton swabs' lifetime so we sent you the free-gift swabs to keep you a pleasant using experience. If the cottons swabs works well and you use the humidifier often, basically no need to change it within 4-6 months. Warm tips: If the cotton swabs work OK but you would not use the humidifier in the near future(maybe weeks or months), we suggest you take out the swabs and dry them before storagin.