I love cool wallet s version because this hardware looks very pretty and also the size of cool wallet s is less than credit card and cool wallet s claims that this wallet is unhackable and also wireless with the help of Bluetooth and NFC support
For using wallet our android phone is not less than 5.0 so if you use 4.4 then even you will not be able to use this hardware wallet did 't works for windows or mac
Tiny size makes it more convenient to carry it, and also this wallet version is more secure than other cool wallets