what one is real what one is fake...
the black amp is filled with .75 of oil
the black amp company lable is not filled in solid(others i have seen are filled in)
the black amp is slightly larger than most other amps
the black amp is very hard to pop open
the red amp is slightly smaller
the red amp is filled with 1 ml or cc
the red amp when opening is very simple a easy push pops it open