No one will reject this mini fan! 1. Optional Miro USB, type-C and Lightning connector, which appliable for most of the cell phones. 2. Ultra low power consumption of 180mAh/hour, theoretically a full charged phone can be used for 20 hours. 3. With lanyard, suitable for outdoor activities and travel. 4. Safety design. Dense net cover dose not need to worry about children's playing and touching fan blades. Your logo imprinting is available!