Don´t panic.
The "white one" is simply an overpriced old device.
Mastech changed the colour of their label on newer ones to red.
Today both colours are in use.
The "red one" is newer but outdated too. The MS8218 is out of production.
It was never a bestseller. Hence there is no one who wants to copy it...
My recommendation would be:
Take instead a Brymen BM857s (maybe even a BM859s).
* 50 000 Counts (500 000 Counts at Volt DC)
* Faster display and bargraph
* Much safer (independent tested), much better build quality
* more reliably
* You have a usable warranty
Where? Look here:
TME Europe (<-- Click me, I´m a link...)Disadvantage: The USB connection cable is not included... (BTW: The cable for the BM867/BM869 works too.)