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Features: Our neck fan has 4000mAh capacity battery and lasts 4.5 hours at most. The personal wearable fan motor has been modified to produce extremely low noise, so that you are not disturbed at work. Three-speed settings could meet different personal needs. The hanging neck fan has dual turbine, producing stronger airflow quickly, which cools you down within 3 seconds. The bladeless hands free neck fan won't jam your hair. Portable and lightweight design for easy and convenient carrying, perfect for home, office or travel. Specification: Material:ABS+ Electronic Components Color: white, green, pink, blue, black, white with LED screen, green with LED screen, pink with LED screen, blue with LED screen, black with LED screen Battery: 4000mah Power Supply: DC 5V/1A Charging Time: 3-4h Working Time: 2.5-4.5h Product Cell: 18650 Lithium Battery Power Supply Product Size:218*140*47mm/8.58*5.51*1.85inch Power supply: USB charging Wind Speed: 3 Gears Package Included: 1x Neck Fan 1x USB Cable 1x User Manual Packed Safely in Retail Box.