Its a ponzi and false advertisement.
 
Made for ZenPool

The world's best miner deserves the world's most profitable pool.

The Hashlet was designed from the ground up to be optimized for ZenPool - the most advanced multi- pool ever conceived. Developed specifically for the Hashlet Prime, ZenPool uses smart payout prediction and the industry's fastest monitoring systems to give Hashlet owners the highest and most reliable payouts of any multipool in the world. And it belongs exclusively to Hashlet Prime & ZenHashlet owners.

It is worse than our current banking system what amazes me is that people dont see it. But then again we have been so conditionalised by our current and past we are not able to see it.