- Innovative portable size: weighs under 200 g, compact and space saving. Lightweight design makes it easy to carry while traveling and suitable for use at a desk, in an office, car, home or bedroom. - Ultra quiet performance: brushless motor delivers strong airflow with minimal noise. At high speed the sound is under 50 dB. The switch indicator auto turns off after 30 seconds to save power, and the gentle wind aids sleep for you or your baby. - USB powered design: powered by USB and compatible with PC or laptop, power bank, AC adapter, car charger and other USB power supplies. No battery required, so you can use it all day at home, in the car, at the office, on a desktop, while camping or while traveling. - Practical use scenarios: ideal for desk work to stay cool during long sessions; great for travel in hotels or on the road, or for camping and outdoor use; suitable for bedroom or baby room use at night due to its quiet operation.