• 【High-Speed Fan】 Features 5 speed settings ranging from 7,300 to 13,800 rpm, providing adjustable airflow to suit various needs.
• 【Long Battery Life】 3600mAh battery capacity offers up to 9 hours of use at the lowest speed setting, ensuring extended cooling comfort.
• 【Cooling Function】 Incorporates a cooling feature that can be activated separately, enhancing the overall cooling effect.
• 【Compact and Portable】 Foldable design with dimensions of 54.5 x 55 x 167mm and weighing only 250g, perfect for on-the-go use.
• 【Versatile Power Options】 USB rechargeable with the ability to use while charging, providing flexibility in various situations.

Specifications:

• Model: RD21
• Battery: 3600mAh 3.7V
• Input Voltage: DC5V
• Charging Current: 1.5A
• Fan Working Current: 0.40A-1.30A (depending on speed)
• Fan Working Power: 1.48W-4.81W (depending on speed)
• Cooling Working Power: Approx. 3.8W
• Usage Time: 2.7h-9h (fan only), 1.2h-2.0h (fan + cooling)
• Charging Time: Approx. 3 hours
• Standby Current: ≤ 20uA
• Fan Speed: 7300-13800 rpm
• Wind Speed: 3.24-5.87 m/s
• Noise Level: 51-64 dB
• Materials: ABS/Aluminum Alloy/Stainless Steel
• Fan Blade Diameter: 44mm (2 inches)
• Dimensions: 54.5 x 55 x 167mm
• Weight: 250g
• Display: Digital screen showing speed and battery level

Fan Function:

• Press the fan button once to turn on the fan at level 1; the display shows "20".
• Press the fan button again to cycle through 20 / 40 / 60 / 80 / 100, then turn off.

Cooling Function (Only Works When the Fan is On):

• Press the cooling button once to activate the cooling function; the green snowflake icon on the display lights up.
• Press the cooling button again to turn off the cooling function; the green snowflake icon disappears.
• Supports simultaneous charging and operation while plugged in.

Charging and Battery Display:

• When the charging cable is inserted, the display lights up, and the "%" symbol blinks slowly, indicating normal charging.
• When fully charged, the display shows "100%" with the "%" symbol remaining steady.
• When a button is pressed, the display first shows the gear level, then returns to the battery display after 3 seconds, increasing by 5%.
• When the battery level drops below 10%, the percentage on the display starts blinking slowly; at 0%, the device shuts down.
• If the battery is at 0%, turning on the device will only display "00", blink slowly 5 times, and then shut down without activating any functions.
• When charging and powered on, if a button is pressed, the display first shows the gear level, then returns to the battery display after 3 seconds.