Our Roland Grey ice pack handheld fan is meticulously crafted from ABS, PC and aluminum alloy. It is specially designed to ensure the long-term and stable air supply. The design for quickly alleviating the discomfort in high-temperature environments. The usage method is extremely convenient: Fan mode: 1. Press the fan power switch briefly once to turn on the first fan position: The display shows 01,2. At any time, press the power switch once to force the machine to shut down. 3. Long press the fan power switch to increase the gear (1-100), and long press the cooling button to decrease the gear. Cooling mode (This function only takes effect after the fan is turned on) : 1. Press the cooling button briefly once to activate the cooling function, and the green snowflake icon on the display screen will light up. 2 Press the cooling button briefly again to turn off the cooling function. The green snowflake icon on the display screen will go out. 3. When charging, the cooling function will automatically turn off or cannot be turned on. Charging and power display 1: Plug in the charging cable, the display screen lights up, the % mark flashes slowly, normal charging. 2. When fully charged, the display screen does not light up. 3. When there is a key operation, the gear information is displayed first. 4. When the battery level is less than 4%, the display screen numbers start to flash slowly and turn off at 0%. 5. When the battery level is 0, only 0 is displayed when the machine is turned on, and it flashes slowly three times before turning off. Do not turn on the function. 6. When charging and starting up, if there is a key operation, the display screen will first show the gear information. Double-clicking the power button will display the battery level. Moreover, it features dual adjustment of fan mode and cooling mode, which can bring you a refreshing feeling. It is compact and portable, meeting the needs of various scenarios.