Ventilateur de bureau portable rechargeable personnel, 4000 mAh, petit ventilateur portable à piles pour voyage, chambre à coucher, bureau, maison, table, écran LED, sans fil, silencieux, 4

[Dual-Power Flexibility: Battery & USB Operation] Experience true cable-free freedom with our versatile personal fan. It operates seamlessly on its built-in battery or any USB power source, making it the perfect desk fan for your office, a reliable travel fan for road trips, and an essential portable fan for outdoor adventures—even during unexpected power outages [Long-Lasting 23-Hour Runtime] Stay cool all day and through the night. Equipped with a high-capacity 4000mAh battery, this rechargeable fan delivers an exceptional 5 to 23 hours of continuous cooling on a single charge. Say goodbye to frequent recharging and enjoy unwavering comfort whether you're working, sleeping, or exploring [4 Customizable Speed Settings] Tailor your breeze to any moment with our 4-speed adjustable fan. Choose from a gentle whisper for quiet work or sleep to a powerful gust for quick cooling after activities. This personal fan puts you in complete control of your environment [Under 45dB Ultra-Quiet Operation] Designed for peace and focus. This quiet desk fan operates at a library-quiet noise level of less than 45dB, ensuring it won't disturb your concentration, conference calls, or much-needed sleep. Ideal for the office, bedroom, or nursery [Thoughtful Designs for Effortless Use] We engineered this portable fan for ultimate convenience. It features a detachable front cover for easy cleaning, a 180° adjustable foldable bracket for perfect positioning, a built-in battery for emergency phone charging, and a clear digital display for an at-a-glance view of your settings