Hash rate 42TH/S mines BTC BCH SHA256 Algorithm Weight 12kg Size 30cmx17cmx30cm 4-5 business days to ship and shipping usually takes 8-10 business days with UPS FEDEX or DHL It will be shipped from warehouse in Hong Kong. I can assure you they are one of the best on the market. I did 10-11 transactions with buyers with no problem. It will be checked and testing video will be sent to you in 5 business days, but once they leave the warehouse, all sales are final. The reason is bulk order of miners from factory come to the warehouse. Each of them is checked carefully and some of them get sent back. And engineers do final check before shipping. So it takes too much time and resources to handle returns. Also there is import fees too. it is smaller company so quality is assured. https://antminer3-shop.myshopify.com/products/t17-42th-s-antminer-with-psu