1. need four AA dry battery or USB interface., 2. product size: depth 12cm* width 16cm* height 25cm - more info check here: http://www.sourcingappliances.com/Mini-Fan-10095858/
Quick Brief
Power Source: BatteryType: Air Cooling FanInstallation: TableMaterial: PlasticPower (W): 0.5Voltage (V): 6Brand Name: BESTModel Number: 626Place of Origin: Zhejiang China (Mainland)