Our Roland Grey Ice Pack Handheld Fan Is Carefully Crafted From Abs, Pc And Aluminum Alloy. Specifically Designed To Ensure A Lasting And Stable Air Supply. Designed To Quickly Relieve 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 1St Fan: The Display Shows 0, 1, 2. At Any Time, Press The Power Switch Once To Force The Machine To Shut Down. 3. Hold Down The Fan Power Switch For A Long Time To Increase The Speed (1-100), And Hold Down The Cooling Button For A Long Time To Decrease The Speed. 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. 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 % Symbol Flashes Slowly, And It's Charging Normally. 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 Numbers On The Display Screen Start To Flash Slowly, And 0% Turns Off. 5. When The Battery Level Is 0, Only 0 Is Displayed When The Device Is Turned On, And It Flashes Slowly Three Times Before Turning Off. Do Not Activate The Function. 6. When Charging And Turning On The Device, 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.