Featuring USB operated design, this clock fan can be conveniently connected to PC, laptop, power bank with USB port to get power. This clock fan is practical, which can allow you to freely adjust the flexible neck to get the breeze position you wish and provide an interesting way to display time. It is constructed of alloy material. It has auto memory function, no need to manual reset time. The total length is 41cm, the blade diameter is 9cm. This mini fan can be carried conveniently to allow you to enjoy cool wind at anytime and anywhere because of its light weight and compact size. Suitable for PCs, laptops, power bank and other USB devices. Item Name: Clock Fan Material: Alloy Rated Voltage: DC 5V Light: Red And Green LED Material: Plastic Shell, Metal Hose Power Supply: Power Bank, PC, Adapter With USB Port Features: Lightweight, Portable, Clock Size Details: Total Length: 41cm/16.14" (Approx.) Blade Diameter: 9cm/3.54" (Approx.) Size: 41cm x 9cm x 2cm/16.14" x 3.54" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Clock Fan