4000mAh Rechargeable BatteryWith a built-in tough battery, can be easily recharged through a socket/laptop/power bank or any other device that has a USB port. Just 4.5 hours will get fully charged. (NOTE: Quick charge needs to be meet 5V/2A current.)Trendy Morandi Color, Create Your Own Summer Vibe JISULIFE newest handheld fan is coming up with trendy morandi color, which makes it elegant and special. Savor your summer with JISULIFE handheld fan, an small item which can greatly improve your cooling experience in summer. Excellent choice for outdoor/travel/commute/party.3 Wind Speed Gears JISULIFE handheld fan supports 3 wind speeds adjustment easily by 1 button. Speed 1 is light wind for about 16 hours, Speed 2 is soft wind for 9 hours, and Speed 3 is strong wind for 4.5 hours.Excellent Size for Outdoor Weighing only 4.66 ounces and measuring only 7.67*3.62*1.35 inches, it can easily fit in a small bag, which makes it easy to carry to keep you cool outdoor.Convenient to Use JISULIFE Handheld fan adopts 1-click design. Short press the button, cycle switch to different (Light/Soft/Strong) speed gears, long press for 3s you can shut down directly. When the hand fan is charging, the LED indicator light will flash slowly; fully charged, the light will stay on. Once the battery is lower than 10%, the light will flash rapidly; if the indicator light flashes quickly 3 times, meaning the battery is too low to start.