When u earn Money,or something else ,In return you save it some where else,b/c u need a safe place to put your precious thing on that place to be safe for the future,you safe your money in banks,some in wallet,there fore there is a digital wallet,which is then needed when u want ur digital currencies (bitcoin) a wallet , actually it can also be called a bitcoin wallet.
It is most safest for bitcoins
it has easiest transaction systems
it is a need of time
if u agree all above then u must have got to the wallet,Here u can have this : CHECK IT OUT !