The usb power supply either uses the battery

to eliminate the harmful smog red indicating lamp

the infiltrate to demonstrate the power source condition

operates or turns off the smoke cylinder cover to come or turns off light the source

many kinds of design color to be possible to supply the choice

easy to maintain the ash-tray clean packing

cleanly: 10*7*2cm.
 

OEM/ODM,Customized Logos/Designs are Welcome