【Max 15H Long Battery Life】JISULIFE desk fan powered by 4000mAh rechargeable battery, which can work continuously 5-15h depending on the wind speeds. With USB-C charging port, Full charge takes 3-4 hours, 2X faster than the rest. Perfect for office, room, desktop, kitchen, bedroom, travel, camping. 【4 Speeds Adjustable & Strong Airflow】JISULIFE small desk fan has 4 speeds(soft breeze/gentle wind/strong wind/night breeze)to meet different cool needs, short press the power button to operate. Equipped with 7 fan blades and copper brushless motor, it provides powerful wind at a stable speed to cool you down quickly. 【Flexible and Thin Design】JISULIFE small desk fan, which is also a wireless fan, is designed with a handle at the top, so it is flexible, easy to carry and pack, and has a lot of freedom in placement, or can be hung on the wall. The base is a relatively small parallel hexahedron that saves space and can be placed even on very small table tops. 【Silent Noise Reduction Tech】JISULIFE desktop fan was made of acoustic composite material and built-in top-mounted anechoic motor, noise less than 30dB. This makes the fan work ultra-quiet and not disturb your work, sleep, makeup and cooking. 【18cm Oversized Fan and Washable Design】Compared to other desktop fans, JISULIFE desk fan with 18cm oversized fan, the fan assembly supports 330° vertical rotation, allowing you to direct airflow to your liking.while the front cover can be easily removed for cleaning, still clean and bright for next summer. JISULIFE Upgrade Small Desk Fan Rechargeable Battery Operated Portable Fan The multiple power supply options make it more versatile, ideal for your desk, office, study room, bathroom, bedroom, library, outdoor travel, fishing, camping, hiking use. 4000mAh rechargeable battery Small but powerful Whisper quiet Compact and Portable Easy to operated Lightweight