•【Powerful Cooling Performance】 Features a 3.9W cooling function for instant relief in hot weather. •【Adjustable Wind Speed】 5-speed settings ranging from 2700rpm to 4600rpm, providing customizable airflow. •【Long Battery Life】 4000mAh battery capacity offers up to 18 hours of fan-only use or 3 hours with cooling function. •【Foldable Design】 Compact and portable, perfect for on-the-go use with dimensions of 198*83*40mm. •【Digital Display】 Clear screen shows battery level and current speed setting for easy monitoring. Specifications: •Model: Z35 •Battery Capacity: 4000mAh 3.7V •Input Voltage: DC5V •Charging Current: 2A •Fan Working Current: F1: 0.22A, F2: 0.32A, F3: 0.45A, F4: 0.59A, F5: 0.74A •Fan Working Power: F1: 0.81W, F2: 1.18W, F3: 1.66W, F4: 2.18W, F5: 2.73W •Cooling Power: 3.9W •Usage Time (Fan Only): 18H, 12.4H, 8.7H, 6.6H, 5.3H •Usage Time (Fan + Cooling): 3H, 2.8H, 2.5H, 2.3H, 2.1H •Charging Time: Approximately 2.6 hours •Standby Current: ≤ 50uA •Motor Speed: F1: 2700rpm, F2: 3300rpm, F3: 3800rpm, F4: 4300rpm, F5: 4600rpm •Wind Speed: F1: 2.36 m/s, F2: 3.06m/s, F3: 3.59m/s, F4: 4.12m/s, F5: 4.65 m/s •Noise Level: F1: 54db, F2: 56.3db, F3: 58.1db, F4: 60.8db, F5: 62.5db •Material: ABS/Electronic components •Dimensions: 198 x 83 x 40mm Charging and Battery Display: (Charging Current: 2A) •When the charging cable is inserted, the display lights up, and the current battery percentage 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 and returns to the battery display after 5 seconds. •When the battery level drops below 5%, 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" without activating any functions. •The fan cooling function cannot be activated while charging. Fan Function: •Press the button once to turn on the fan at level 1; the display shows "F1". •Press the button again to cycle through F2, F3, F4, F5, and then turn off. •Long press the button to activate the cooling function; the snowflake icon on the display remains lit. Long press again to turn off the cooling function, and the snowflake icon disappears. Package included: •1 x Handheld Fan •1 x Data Cable •1 x English and Chinese Instruction Manual