RBD53G-5HacD2HnD-TC&EG12-EA
Does it work only with v7.0 and above?
This product is called “Chateau LTE12”
https://mikrotik.com/product/chateau_lte12
Yes, it only works with RouterOS v7
lucky i didn’t try to downgrade 
please give me more info about 2 x SMA external antenna.
is that for 2.4 or 5?
Device opraithing with chain 0 and i add external antennas can play with chan 1?
is im correct?
Like the product page and PDF explains, external antennas are for LTE:
https://i.mt.lv/cdn/product_files/Chateau_LTE12_200712.pdf
I found in my local market that under the name “Chateau LTE12”, goods are offered for sale with two codes:
5HACD2HND-TC&EG12-EA
and
5HACD2HND-TC&EG12-EAC5
What is the difference between them?