OPOLAR F304 Handheld Misting Fan, Mini USB Fan with Cool Humidifier, 2000mAh Rechargeable Battery, 20ml Water Tank, Dual Misting Modes, 3 Speeds, Personal Portable Fan, Outdoor Fan, Desktop Fan-White 3 SPEEDS AND TWO MODES SPRAYING-3 Modes of Wind Speed-Low, medium, or high. Continuous or intermittent spraying per your choice, the humidifier could operate independently or together with the fan. RECHARGEABLE & PORTABLE FAN- With built-in rechargeable 2200mAh lithium battery, light-weight and handle design, mini size (3.9, 1.5, 7 inch) convenient to carry with when go hiking and travel. USB OR BATTERY OPERATEDUpgraded 2200mAh rechargeable battery (included) or by being connected with a USB cable (included). Battery works 2-7 hours for a fully charge (Depend on the mode you use) HUMIDIFIER AND COOLING Fan- USB mini cooling fan and beauty humidifier 2 in 1, hand misty fan for lasting your makeup or cooling after exercise. LOW NOISE AND ONE YEAR WARRANTY- Adopting brushless motor can reduce noise to 40db. Just a whisper on high and silent on low. You cannot hear it over the sound of typing. 12 Month WARRANTY to protect your small, but significant investment.