It's time to take back mining profitability.

Meet the upgraded Vaultbreaker and Vaultbreaker Mini.

We have added a +50% power boost in MH/s to the original designs for some added punch.

At 750 MH/s, the Vaultbreaker is a new weapon in the fight for solid Return on Investment (ROI).

Pre-Order them today (shipping end of Q3 / early Q4).

http://bringbackroi.com/