3 Speed Options & High-strong Wind The handheld fan have 3 Speed Level which are Soft Wind/Medium Wind/Strong Wind.You can adjust the appropriate wind speed by repeatedly pressing the power button. It's 4pcs fan blades and 30-degree inclined angle of the shell to produce a Hi-strong and soft airflow and wider wind supply surface. The brushless motor makes the fan durable.Efficient power and conversion circuitry can minimize the loss to save energy and protect environment. 2-in-1 Multiple Operation Modes This USB fan have 2 Operation Modes. Rechargeable Battery Power Supply Mode (it can be removable and rechargeable battery can be replaced) . Variety of USB Interfaces/Plug and Play Mode,it can be charged via USB charger/ laptop/power bank/car power bank and other USB-enabled devices. 2-in-1 Multiple Operation Modes,you can choose according to your habits and needs. 1500mAh High Capacity The mini fan comes with a 1500mAh rechargeable 18650-Li-ion battery which is Long lasting. It can work for 3 -10 hours on a full charge.You can take outdoor activities with relaxing and do not worry about low battery or too hot,the little fan will keep you cool. Ultra-low Mute This Electric fan use ultra-quiet processing which use a copper brushless motor to reduce noise.Ultra-low mute air supply mode can be as low as 25 decibels.With the gentle wind and mute mode are recommended for the elderly and children sleeping,make them feel good. Personalized&Portable,Lightweight Design This personal fan is stylish and energetic style,will show your unique.The portable fan is only 155g.The lightweight and portable design, When you go out with it (handheld or put in your bag or hung ) will feel 0 burden. And it comes with a removable&Non-slip base and have a eyelet for hung.It can be use as desk/desktop fan which is convenient and fast to use on the desk when you play computer or work.At the same time you can also release your hands.