General description The Mini Quiet Desk Fan is a personal portable USB fan designed for use in the office, home, study, and bedroom. It features a double blade design with 4 blades in the front and 7 blades in the back, providing stronger yet calmer airflow while being energy-efficient. Technical specifications Dimensions: 102 x 79 x 138 mm Cable length: 1.8 m Noise levels: Level 1 - less than 26 decibels; Level 2 - less than 34 decibels Compatibility and accessories Powered by USB charger, laptop, computer, power bank, or any other USB output source Installation Simply connect to a USB power source to operate Usage Adjustable angle from 0° to 30° for optimal airflow direction Two speed levels to choose from for personalized comfort