https://www.ledgerwallet.com/products/ledger-nano-s
here is the official website for the Ledger Wallet
I feel like it's only necessary if you are investing in multiple coins at once. It can store 5 different coins, and you can swap out what coins it can use.
There are "hot" and "cold" wallets. Hot wallets are online, cold wallets are, like the ledger, a small piece of hardware, usually a flash drive.
Oh - ok. I guess it seems like I am going to need one. But I wanted all 22 coins!
Well you'd need to buy multiple cold storage wallets, each one can hold five.
I definitely planned to have many coins going. I'm re-thinking my life now.
this little bit of info might help you...it did me! (not wallet, but exchange price related.
https://steemit.com/blog/@lucylin/what-a-difference-an-alarm-makes-an-example