3S Cool down 18F/10CThe neck fan providing 360 degree surround wind, cooling you from head to toe, even with mask. Features a double cooling system plus dual-channel outlet to cast you an all-around cooling area, keep away heat waves. 60 thicker and 44mm wider fan blades maximize the pressurization of air to increase the air output by more than 50%.Only weigh 8 OZ & Adjust angel at willThe portable neck fan weight is 8.0 OZ, ultru-light as a feather, you won't even notice. The hose adjusted structure is easy to open and close, you can adjust the angel at will. This portable fans fits any ages and body shapes. They're wonderful gifts for birthday, work, office, life, sports, travel, hiking, cycling, etc. Comfortable to wear, easy to carry, suitable as a gift in summer.3-Speed wind & 3-8 hours lastingRechargeable polymer lithium battery provides 3-8 working hours duration (depending on different speeds). The micro-USB charging port only requires 2.5 hours to fully charge. The bladeless fan prevents overcharge or discharge.Noise reduction system down to 31 dbFeatures noise reduction system to cast you into a quiet area. So the wearable air conditioner's noises will go down to 31 db. Even the fastest speed-strong wind brings you breeze sound, making you feel like walking in the forest with personal fan.