Features:Thanks to LILENG& 39;s latest dynamic technology, the maximal fan rotating speed arrives to 3200rpm. More airflow, but less noise.Small (180x90x35mm) and exquisite, easily put into a bag inside. Weight , Perfect for outdoor activities and travel, or just place it on the desktop.[ADJUSTABLE 3 SPEEDS]-The portable fan speed can be adjusted among low, medium, high according to your demands.[USB OR BATTERY OPERATED]- Upgraded 2200mAh rechargeable battery (included) or by being connected with a USB cable (included) even use an adapter to plug into wall socket. Battery works 1.5-6 hours in a full charge.Side and internal light would be a big bonus for lighting. Specification:Material:ABSInput Voltage: DC 5VWorking Current: 600mAPower Consumption: 3.76WColor: Black, white, blue, pink, green, purple(Optional)Dimension: 180x90x35mm(10mm=0.39in)Quantity: 1 Set Note:1.Please allow 0-1cm error due to manual measurement. plz make sure you do not mind before you bid.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 Pc x Fan1 Pc x USB Cable1 PC x 18650 Battery