"Maybe 385g w/o batteries?"
I can read a little of that - it's 385 grams without the battery or picture card, if that makes sense, and 420 grams with them.
万 is the character for "10,000" so 604万 means 604 x 10,000 so it seems to have 6.04 megapixels.
It's also waterprof.
Maybe Miguel could help?