I noticed this as well. I'm sure its supposed to be .39 inch. If it were true, it would be bigger then my living room TV! XD
When I owned a rental property I could truthfully tell the tenants that their TVs (often well over 60 inches) were bigger than mine. That did a lot to convince them I wasn't made of money, because they couldn't imagine someone who had money not having the biggest TV they could buy.