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Bitcoincafe.ch is organizing a contest with 4 Trezor Hardware Wallet to win.
Here is the contest page: https://www.bitcoincafe.ch/2017/04/12/contest-win-a-trezor-hardware-wallet/
There is 25 ways to enter, there is nothing to buy to participate in this contest, you can simply participate by visiting a page only.
Good Luck !