Description: 【COOL MIST HUMIDIFIER】300ml water tank, 50ml/h spray volume, 2 working modes: Intermittent Mist (3 seconds on/3 seconds off) & Continuous Mist. Working Time: 4 hours in continuous mode, 8 hours in intermittent mode. 【AUTO SHUT-OFF PROTECTION】Humidifier automatically shut-off when the water level is low or 4 hours automatic power-off protection. extremely quiet working noise. 【UNIVERSAL POWER SOLUTION】Powered by Micro USB 5V=1A, compatible with any device with USB port (laptop, desktop, power bank, socket, power outlet). 【ULTRASONIC AND QUIET】Adopted ultrasonic spray technology and high-tech . Less than 25 dB is a quiet environment, good for working and sleeping. 【VARIOUS OCCASIONS】compact and convenient to use in office, yoga, car, bedroom and travel scenes. Note: Please soak the cotton swab for 3-5 minutes until it is fully soaked before using. Please do NOT add essential oils or distilled water into the humidifier, which will cause the product to malfunction. Specification: Material: ABS,PP Power: 2W Voltage:5V Spray amount: 50ml/h Working Hours: 4-8H Tank Capacity: 300ml Size 1: Approx. 84x110mm/3.3x4.3 inch Size 2: Approx. 84x127mm/3.3x5 inch Package Includes: 1 Piece Humidifier 1 Piece USB Cable 1 Piece Replacement Swab Cotton 1 Piece User Manual