• 3 speed levels are adjustable, can meet your different needs. Faster speed, lower power consumption, and lower noise 
• Mini and lightweight, easy to carry or put into your bag for organizing
• Built-in high 2000mAh lithium battery, long battery life up to 10h
• A kickstand is for using at the desktop
• LED digital screen for showing the remaining power
• With a long neck hanging rope design, easy to hang on your neck, free your hands
• It is suitable for many occasions, such as reading a book, riding a bicycle, working

Specification:

• Rated input: DC5.0V/1.0A
• Working current: 0.3-1.2A
• Rated power: 1.2-5W
• Battery capacity: 2000mAh
• Working time: about 10 hours for 1st level, 4.5 hours for 2nd level, 2.5 hours for 3rd level
• Charging time: about 2 hours

Operation instructions:

• Fan function: press the switch once to start the 1st level; press the second switch to start the 2nd level; press the third switch to start the 3rd level; press the fourth switch to turn off the power.
• Display function: the 3 speed levels display as "01", "02" and "03" respectively;  it shows "01-100%" for the remaining power; it shows "LO" when in low power; it shows "100%" when in fully charged.