USB Programmable fan, Enjoy more fun. Specification Working Voltage: DV 5V Working Current:≤350mA Product Length: 40cm Weight:60g Fan Diameter:88mm Switch：Key switch Features 1.USB port powered, no external power supply needed.Only one switch on/off, easy to control. 2.Super compact & lightweight. 3.It could be used immediately after connecting to the USB port or power bank, and other devices with USB. 4.Gently adjust the flexible neck to position the cool breeze any direction you wish. 5.Durable soft fan blades for safe usage. 6.The user can edit the LED message by software via connecting USB port to the computer(NO data cable is needed).Simply plug into any USB port on computer. 7.Programmed text or message transfer by microwave. 8.The message can be kept permanently even when the power is removed. 9.Apply to PC, Laptop, PDA and any device with a USB port. 10.CD-R software can be applied to Windows operating system only. Contents: 1X Programmable Fan 1X Software CD 1X Instruction Manual Caution: 1. Do not touch the spinning fan blades. 2. Do not exert to much pressure on the USB connection when adjusting the flexible neck. 3. Keep your face and hair away from the spinning fan blades. 4. Please turn off the fan when you do not use it. 5.Give it a break after 4-5 hours working.It will prolong the service life.