SpecificationsProduct Name: ZOWOTO Neck FanBattery capacity: 2400Ah x 2Charging time: 1.8 hoursLife time: 4-10 hoursCooling range: 6-11°CCharging interface: 5V 2A micro USBProduct size: 210x140x61mmProduct net weight: 9.3ozPackage included1 x Fan1 x Gift Box1x USB Data lineFriendly NotesYou may notice slight differences of color (Mostly Hue and Saturation) after you received your product.There might be 0.5-1 inches of measurement deviation exists due to manual measurement.Customer ServiceOur Customer Service is 24/7 online, please feel free to ask us any questions, we will more than glad to help you.