DaFeng Time Innovative Display Endurance Technology High-Speed Handheld Timer Fan Silent Portable Personal Cooling Rechargeable Long-Lasting Mini Powerful Small Electric Fan

Innovative patented timing technology with AI Coulomb counting chip for minute-level precise remaining battery time prediction

Eliminates battery life guessing and anxiety with visible remaining time display

3 auxiliary endurance algorithms and 7-level battery calibration mechanism for accuracy

36-step aging and precision testing to ensure reliability

High-speed turbocharged engine with up to 11,000 RPM for powerful airflow

Floating high-speed bearing for efficient, low-loss airflow delivery and low noise operation

Self-developed high-speed brushless motor with high-density blade design

Max cyclone air duct design for wide-area, 180° full-body cooling coverage with uniform cold airflow distribution

100-level stepless wind speed adjustment via sliding rail control for personalized comfort from gentle breeze to strong wind

6 m/s strong wind speed providing real ice-cold airflow sensation