Lightweight and Portable Fan: - The size of the portable fan is about 5.7 x 2.76 x 1.78 inch, the weight is 0.2 Ib, it is a large portable size and n is not heavy to carry, the lanyard design frees your hands, perfect for travel, hiking, camping, outdoor activities. High-performance battery: - The USB mini fan is powered by built-in 14500 rechargeable lithium battery, charging for 2-3 hours, providing 2-4 hours of continuous use. This portable fan comes with a USB charging cable, you can charge it by a regular outlet, computer, car charger or any device with a USB port. 3 speeds adjustable : - The portable fan has 2 adjustable wind speeds, you can control the fan speed by pressing the power button repeatedly, the highest rotating speed can reach 8200 rpm, the mini fan has wind strong and durable, which can keep you cool and comfortable in the hot summer. Foldable Portable Fan: - This mini portable fan can bend up to 180, it can be used as a portable fan outdoors. outdoors or can be used as a mini desk fan on the table in the office. Suitable for summer travel or outdoor sports. Strong Wind: - Equipped with 5 fan blades, strong enough to support the blade running at super high speed to produce strong wind, this fan can produce strong airflow and cool you down quickly.