Specification AirFlowCapacity : 178.2 cubic_meters_per_minute BatteriesRequired : 1 Brand : TOPK BulletPoint1 : Mini desktop fan: Its main features include USB power supply, 3-speed wind settings, 360° rotation, and can be powered by devices with USB interfaces such as computers and adapters. You can repeatedly press the button on the back of the fan to switch from low, medium, high to off. The first stage: 3.9m/s. Class 2: 4.9m/s. Class 3: 5.9m/s. Even in places without air conditioning, it can keep you cool BulletPoint2 : 360° rotation & stability: The fan head of the electric fan can rotate vertically 360 degrees, and you can tilt it to your desired angle to cool down quickly. The desktop fan is designed with 2 anti-slip rubbers on the bottom to reduce vibration and increase friction, making it more stable and preventing sliding even when working at high speeds BulletPoint3 : USB-powered: This portable fan is powered by a 1.2-meter USB cable (non-removable), compatible with 5V output devices. It can be plugged into any device with a USB port, such as a PC, laptop, power bank, USB wall charger (not included), car charger, and any other USB-enabled power source. (Note: this fan does not include a battery) BulletPoint4 : Silent Upgrade Design: The silent desk fan has 3 curved blades, reducing wind resistance and increasing available airflow area. At the same time, it is equipped with a powerful silent motor to reduce noise. Even at the highest speed, the noise remains at 40-50db BulletPoint5 : Compact Size and Application: This is a 4.7-inch mini fan with dimensions of 12*12*5.5 cm (4.7"*4.7"*2"), weighing 0.35 Pounds, light and space-saving. This portable fan is perfect for offices, desktops, dorms, homes, bedrooms, libraries,or anywhere you need to cool off. The noise level is lower than 50 decibels, providing you with a quiet enjoyment BulletPoint6 : Premium Motor Design for Enhanced Performance and Durability: This desktop fan is powered by a high-quality brushless motor that significantly reduces operational noise, guaranteeing a quiet and undisturbed environment while maintaining optimal air circulation. The adoption of brushless technology also translates to a longer lifespan compared to traditional fans, providing users with a reliable and efficient cooling solution that stands the test of time. Color : Black CompatibleDevices1 : Desktop CompatibleDevices2 : Gaming Console ConnectorType : Micro USB ControllerType : Button Control ControlMethod : application CoolingMethod : Air ElectricFanDesign : table_fan ExternallyAssignedProductIdentifier : 6971708069078 ExternallyAssignedProductIdentifier1 : 802389386733 ExternallyAssignedProductIdentifier2 : 0802389386733 FinishType : Matte or Glossy Plastic FormFactor : Neck Fan, Wearable Fan Hazmat1 : LITHIUM ION BATTERIES CONTAINED IN EQUIPMENT Hazmat10 : DE_SmallLithiumIonBatteryInEquipment Hazmat11 : EG_SmallLithiumIonBatteryInEquipment Hazmat12 : ES_SmallLithiumIonBatteryInEquipment Hazmat13 : FR_SmallLithiumIonBatteryInEquipment Hazmat14 : GB_SmallLithiumIonBatteryInEquipment Hazmat15 : IE_SmallLithiumIonBatteryInEquipment Hazmat16 : IN_SmallLithiumIonBatteryInEquipment Hazmat17 : IT_SmallLithiumIonBatteryInEquipment Hazmat18 : JP_SmallLithiumIonBatteryInEquipment Hazmat19 : MX_SmallLithiumIonBatteryInEquipment Hazmat2 : UN3481 Hazmat20 : NL_SmallLithiumIonBatteryInEquipment Hazmat21 : PL_SmallLithiumIonBatteryInEquipment Hazmat22 : SA_SmallLithiumIonBatteryInEquipment Hazmat23 : SE_SmallLithiumIonBatteryInEquipment Hazmat24 : SG_SmallLithiumIonBatteryInEquipment Hazmat25 : TR_SmallLithiumIonBatteryInEquipment Hazmat26 : US_SmallLithiumIonBatteryInEquipment Hazmat27 : ZA_SmallLithiumIonBatteryInEquipment Hazmat28 : 9 Hazmat3 : II Hazmat4 : AE_SmallLithiumIonBatteryInEquipment Hazmat5 : AU_SmallLithiumIonBatteryInEquipment Hazmat6 : BE_SmallLithiumIonBatteryInEquipment Hazmat7 : BR_SmallLithiumIonBatteryInEquipment Hazmat8 : CA_SmallLithiumIonBatteryInEquipment Hazmat9 : CN_SmallLithiumIonBatteryInEquipment IncludedComponents : 2Pack Small USB Desk Fan IndoorOutdoorUsage : indoor IndoorOutdoorUsage1 : indoor IndoorOutdoorUsage2 : outdoor IsCordless : 1 ItemName : TOPK USB Desk Fan 2Pack Mini Personal Fan Portable, Strong Airflow & Quiet Operation, USB Powered, Three-Speed Wind Small USB Fan for Desk, 360° Rotatable Head for Home Office Table and Desktop Black ItemPackageDimensions_Height : 24.2 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 12.7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : usb-desk-fans MainPowerConnectorType : Micro USB Manufacturer : Dongguan Chenxun Electronics Co., Ltd. ManufactureYear : 2021 Material : Acrylonitrile Butadiene Styrene Material1 : Plastic Material2 : Metal MaximumRotationalSpeed : 2650 rpm ModelName : K51 ModelNumber : K51 MountingType : Free Standing NoiseLevel : 50 decibels NumberOfBlades : 3 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfLithiumIonCells : 1 NumberOfLithiumMetalCells : 1 NumberOfPowerLevels : 3 NumberOfSpeeds : 3 PackageLevel : unit PartNumber : K51 PowerConnectorType : USB PowerSourceType : USB Powered ProductDescription : Specifications: Product name:USB Cooling Fan 80mm 2Pack Bearing System:Double ball bearings Color:Black Voltage(Max):5V,Current(Max): 0.33A Speed:1:2150RPM / 2:2450RPM/ 3:2650RPM Size: 3.62x3.62x1.85 inches (one unit) Length of USB Cable:1m/39.37in USB extension cable length:44cm/17.32in