Features and specifications Key features: Flashing LED Unique shape and flexible Suitable for laptop, desktop PC Soft foam blade Powered by USB port Mini shape for easy carrying Noiseless design wont disturb your work Makes you feel more comfortable at work Specifications: Material: Metal alloy Length: 40 cm (approx.) Fan diameter: 88 mm (approx.) Color: Silver Net weight: 60 grams Tips: The usb fan work with DC 5V and 330mah power , dont let it working with power bank and wall charger above 5V and 330mah . How to use: 1.Connect to a laptop or PC, then press the button to power on the fan. 2.3-second press to see the pointer flash, then stop. Long-press to adjust time, then stop. Short-press to fine-tune, then stop. The time setting is complete. (flashing will stop about 6 seconds after) Ever bored in your office or just looking for an additional chill this summer? Check out our USB LED Fan Clock. It is a USB powered fan that displays LED clock as it spins. It is 100% safe to use. Its blades are soft but durable so it won't hurt you even if you accidentally touch it while it is spinning. Its neck is made of flexible iron making you able to turn the fan in any direction and at any height. Displays hour, minute and seconds hands. Always follow the time, even if you have unplugged it once Easy to use, just plug into any USB power source To set time, just press and hold on/off switch. Blades are made from PVC plastic and are very soft but durable. To use: Plug fan into a USB port and press the button to fan on and activate the clock display. Press and hold the button until the minute hand blinks, then release. When flashing, press and hold the button until the watch starts to turn and release when it reaches the desired time. To make small changes, Press the "SET" button once for each minute. The time is automatically stored in after 6 seconds without activity. After the first time setting, it will remain when turn off, no need to set it again.