meeting your various wind power needs in any scene.Mini fan with small,rechargeable battery little fan. hand fans battery operated is equipped with a high definition digital display screen, Which can show the current wind speed and remaining batteries power, You can schedule charging in advance, ensuring a cool companion on every trip. Digital Display Power Reminder: This fans battery operated is equipped with a high definition digital display screen, Which can show the current wind speed and remaining batteries power, You can schedule charging in advance, ensuring a cool companion on every trip.