Not being awkward, trying to make the point that it's not reasonable to expect everything as 'new' to be totally untouched or turned on before and there's a judgement call.
People are saying because the OP used the product for 6 hours then it is used which is technically true but I'd still say it was 'new' myself in terms of everyday language.
When I worked in retail in an electrical shop most of our display stock ended up going back in the box and being sold as new ultimately even though it had been 'used' by us and many customers before.  If there was no damage or any sign of use then it went back on the shelf, only if there was damage to it would we sell it as ex-display and cheaply.