JisuLife FA19 4000mAh Wireless Rechargeable Desktop Mini Fan Silent Portable Fan % imak and the battery life is

and the battery life is 365 days under energy-saving use)

4V polymer battery

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Kit list：4 input 2 output power amplifier and sound switcher loudspeaker switch distributor x 1

smooth to the end

JisuLife FA19 4000mAh Wireless Rechargeable Desktop Mini Fan Silent Portable Fan % imak and the battery life is1. Battery capacity: 4000mAh 2. Charging time: about 3 4h 3. Use time: about 15h 4. Charging port: Type C 5. Wind speed level: 4 adjustable levels 6. Operating mode: air blowing sleep mode 7. Material: ABS 8. Size: about 18. 2 x 22. 8 x 6cm Features: 1. Streamlined flow guide removable wind cover, low resistance to noise suppression 2. 7 soft fan blades, wing shaped noise reduction profile 3. All copper brushless motor, smooth speed, silent and energy