Here are some of the key features of the Xiaomi SOLOVE F5 Pro 4000mAh Extendable Smart Desktop Fan:

• 4000mAh battery provides up to 11 hours of continuous use
• 60° wind direction adjustment range
• Quiet operation (32dB noise level)
• Built-in timer
• Simple control panel
• Compact and lightweight design

If you are looking for a smart, quiet, and portable desktop fan, the Xiaomi SOLOVE F5 Pro is a great option. It is perfect for use in the office, at home, or on the go. 

Here are some additional details about the fan:

• Brand Name：SoLove by Xiaomi
• Dimensions: 5.27in x 7.08in x 12.22inch
• Weight: 577g
• Rated power: 3.5W
• Charging input: 5V- 0.8A
• Charging time: 6.5h
• Power (W)：3W
• Voltage (V)：5V
• Power Source: USB
• Type: Ventilation Fan
• Max. Timing Limit: No Timing
• Rotation Way: Rotate the Page
• Air supply mode: Rotary Vane
• Application: 10㎡
• Rotary Vane Quantity：3
• Wind Type: Natural Wind
• Max. Power: 20W