You can get more info on hardware wallets here.
As for Trezor you can read reviews here, here, here and probably many other places if your search further on Google.
As for safety, you can review Trezor's code yourself and you can read about exploits found on the device. I'm not really paying attention, but so far I've only seen one, that's already fixed.
Topic: trezor the device to storage your bitcoin (Read 1483 times)
i hear my friend tell about this device to storage your bitcoin, who used for me opinions, is trezor safe
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