SCAM - https://bitcointalk.org/index.php?topic=5049924.msg46855532#msg46855532
This was announced on many news sites (paid articles) and listed on couple of ASIC profitability sites, as well as on HashDeploy for sale.
I pre-ordered one in September fro $1899 and it was to be delivered by 10th Oct. Nothing so far and no response to mails.
And now without delivering the pre-orders they are taking new orders at $1699 for in-stock delivery.
Save your money and don't buy anything from Bittech.