reloop RP-7000 mk2 effective mass tonearm's inconsistent value???

Hi all,Im going to buy reloop rp-7000 mk2 turntable, of which Im
checking carefully mass tonearm.

Im confused about its public data of mass tone arm.
One web page says its effective mass tonearm is 12g.
See https://www.reloop.com/reloop-rp-7000-mk2

However, alot of other webpages say its effective mass tonearm is 30g.
Just to list a few:
https://www.getinthemix.com/dj-equipment/dj-turntables/reloop-rp-7000-mk-ii-dj-turntable.htm
https://www.musikhaus-korn.de/en/reloop-rp-7000-mk2-black/pd/139928
https://djcity.com.au/product/reloop-rp-7000-mk2-direct-drive-scratch-black-dj-turntable-with-free-c...

So which one is its correct mass tonearm? 12g or 30g?
This is so important factor.
Thank you