Product name: Portable hanging neck fanCell: polymer batteryFan Power: 5W MAXBattery capacity: 2400mAhInput: DC.5.0V=1.0AMAXProduct size: 24.5(L)* 11.5(W)*6(H)cmSwitch description: lightly press the switch, turn on the first gear, press it again to increase to the second gear, press the third time to increase to the third gear, and finally press the power off. Long press the switch to turn on the colorful lights (LED colorful models).Indicator light description: Turn on the blue light, the blue light flashes when the power is insufficient, the red light is displayed when charging, and the light is off when fully charged.