Hi Sabina. Both sentences express the same thing/idea, but the second sentence contains what we call a comma splice. In English, independent clauses, which are complete sentences, cannot be separated by just a comma; they require either a semicolon or a period, like in the this sentence I just wrote. The correct way to rewrite it would be, "This bracelet is an unique original item. You won’t be able to reorder the same bracelet." Or you could write, "This bracelet is an unique original item; you won’t be able to reorder the same bracelet. Either one is acceptable.