There are various types of wallet for storing you BitCoin safely. Those are Web Based Wallet, Hardware Wallet, Desktop Wallet, Mobile wallet etc. But did you know which wallet is best for storing your BitCoin safely. So if you want to store a large amount of wallet like 500 BTC then Trezor is the best Bitcoin hardware wallet and launched in August 2014. It as the first Bitcoin hardware wallet, offering secure cold storage. I'm just discuss some feature of it
Security: TREZOR provides top-notch security for bitcoin, protecting against both physical and virtual theft. TREZOR is an HD wallet where you control the private keys, so an entire wallet can be backed up with the 24 words generated on setup. The original 24-word seed is generated using RNG from the device and the computer. The seed is generated offline and displayed on the TREZOR’s screen, which ensures that the seed is never on an internet-connected device. A full overview of how TREZOR handles security threats can be found on the Satoshi Labs website.
Privacy: TREZOR itself offers very good privacy. Satoshi Labs has no way of tracking your actions after you receive the device because it has no serial number. All of the software is open source. No usernames or passwords are needed when using TREZOR.
You can also know details by visiting those website. I'm just post it so those people who wants to store their BitCoinsafely can use it
https://99bitcoins.com/bitcoin-trezor-review-promo-code/
Some security FAQ: http://doc.satoshilabs.com/trezor-faq/threats.html