Key FeaturesDual Power & Charging: Runs on solar power (via an included 25W monocrystalline panel) or standard AC electricity, automatically switching when power cuts.Battery Backup: Equipped with a double-battery system providing 8 to 15 hours of runtime depending on the selected speed.Extra Utilities: Includes a built-in LED light, 2 DC output ports for external LED bulbs, and a USB port for charging mobile phones.Speed & Operation: Features 3 speed levels and a silent motor design.