Formerly produced by CalChip, RAKwireless also known as MNTD., is one of the more popular brands of hotspot mining devices on the market. It has two versions, the RAK V2 Goldspot (8GB RAM) and the Blackspot (4GB RAM). You would be lucky to snag a miner at one of their drops, which happen at least once a month on the MNTD. website. For details on how to purchase, be sure to visit our website.