1) Powered by USB socket
2) Setting your favorite words in LED light freely
3) 1-4 LED different Messages with maximum 16 characters
4) Available letters, number and symbols: A to Z , 0 to 9, 
   +, -, x, /, =, *, !, $, &, @, ?,, ., ', :, ;, ", ", ( ) and ..
5) Available LED colors: red, Orange ,blue, green ,purple  
6) Logo print is welcome

7) European RoHS material comply can be offer