The Handheld Misting Fan features an orifice nozzle that is designed to deliver mist from its pressurized water reservoir, which in combination with the fan action provides cooling for up to an hour before refill. For some, mist is delivered through a manually-activated spritzing mechanism. Most makes/models come with a built-in pressure equalizer, separate mist and fan activation buttons, multiple fan speeds, and adjustable misting options. Source of power is by either AA or rechargeable batteries. Common brands include ComLife, HandFan, O2Cool, and TianNorth.