Brand:JISULIFEProduct name:Handheld FanModel:F2BInput:5.0V= 2.0A MAXFan speed:3.7m/s MAXBattery capacity:4000mAh(14.8Wh/3.7V)Capacity cell:lithium-ion batteryWorking power:2.1W MAXCharging time:3-5hrsWorking time:3-18hrsProduct weight:6.1 oz.Package Accessories:Handheld fan*1, Micro-USB charging cable*1, Manual*1Dimension:3.43(L)*1.75(W)*6.22(H) inches