Features brushless motor technology with 5 adjustable wind speeds (36-45dB levels) for comfort in any environment while maintaining quiet Equipped with 4000mAh built in battery supporting both USB charging and optional solar charging, providing various hours of continuous operations on a single charging Delivers stable 7V / 5W output with overcharge protections, user friendly ABS materials, and gentle airflows distribution for stable cooling in multiple scenarios Lightweight design (750g standard / 1050g solar model) with a carry handle and compact dimensions (27.8x23x7.5cm) for effortless desktop placement or outdoor transportation This versatile desktop fan combines cooling, LED lighting functions in compact unit, perfect for home, offices, outdoor camping, and emergencies use with its 5 designs and ABS construction