Main features: ? 3 speed settings ? Cooling, humidification, sterilization, large air volume, quiet engine, low noise. ? Powered by USB, which can be charged with a computer, mobile power supply or power bank. ? Cool air supply, wide wind spectrum, fast cooling, refreshing summer. ? Low consumption, energy efficient and environmentally friendly. ? UV sterilization function, freshens and purifies the air (Style C only) ? Aromatherapy function, pleasant mood. Specification Material: environmentally friendly ABS plastic + PC Voltage: 5 V. Power: 5 W. Water tank capacity: 400 ml. Power of the sterilization lamp: 0.2 W (1 x 0.2 W) Optional style: Style A: USB powered, LED lighting + Aromatherapy + 3 speed adjustment Style B: Rechargeable, LED Lighting + Aromatherapy + 3 Gang Adjustment Style C: sterilization, rechargeable + LED lighting + aromatherapy + 3 speed adjustment Dimensions: Package weight: 0.8 kg Product size: 15.50 x 14.50 x 18.90 cm / 6.10 x 5.71 x 7.44 inches. Package contents: 1 x mini air cooler 1 x USB cable. 1 x manual (English language not guaranteed)