Yes high risk and huge return investment indeed. Don't invest the money you can't afford to lose there.
Anyway it's still better than invest in many altcoins right now.
That's not an incredible achievement if they were around for over a year. I've seen people claim to have reached ROI with different providers in less than 4 months.
And whit Hashlets Roi in 14 days, after i sold my Prime Hashlets for 50 bucks! (got them for 16 bucks)
I got hashlets for free to becorse i was a rearly buyer, sold them, even more profit!
Made a payout and sold my bitcoisn on koop-bitcoin.nl
Hashlets made me a lot of €€