1W ultra-low-power， 5730 SMD LED， long lighting test， heat is no problem
Operating current: 60mA， high luminous efficiency， energy-saving
Can be placed in your wallet or hang on a key， is portable
Power supply: Standard USB interface， compatible with devices with 5V USB port such as mobile power， notebook， netbook and desktop computer， etc.
This USB light uses three bright， luminous efficiency LED lamp beads， lamp beads in parallel independently of each design， even a bad one does not affect the other two lights' normal use