A handheld rechargeable fan is a compact, portable cooling device powered by a built-in lithium-ion battery, typically charged via USB-C or Micro-USB. These fans, often featuring 3-6 speed settings, utilize brushless motors for strong, low-noise airflow (often
) and provide 3–18+ hours of operation. Common features include a foldable design for desktop use, a 150g–290g lightweight build, and optional extras like LED displays, power bank functionality, or flashlights