... : 1. For advertising to promote new items or reduction sales at dressing shops, bookstores, bars, malls, supermarket, window display, etc.2. ... environmentalprotection, energy saving: continuous light consumes only about 500 hours at one time, normally until the second half with a degree ... battery:1800Mha li-battery can ensure the board continuously work at least 8 hours when powered off .3.Chain:it is ...