Product details of DURATION POWER DP-7639 Rechargeable 4000mAh Battery Three Speed Modes Up-Down Adjustable Desk Fan

• Input: 5V/2A
• Rated Power: 13W
• Charging Time: 4 Hours
• Using Time: 3 / 4 / 6 Hours
• Battery Capacity: 3.7V 4000mAh
• Effective Wind Speed: 4.2m/s
• Charging Port: Type-C
• Color: Random*

1. A variety of power supply methods, can be connected to the computer, 5V 2A charger, power bank for power supply and charging.

2. Designed with removable battery structure, which is convenient for users to maintain and replace the battery by themselves to enhance the endurance.

3. This product can adjust the fan angle up and down 90° freely.

4. Circulating fan blade design, strong wind power to circulate air

5. Three gear wind power options, wind speed at your disposal, brushless motor, strong wind power