CoolWallet is a mobile hardware wallet that has a Bluetooth connection. CoolWallet can be used to store Bitcoin, Ethereum, Litecoin, XRP, Bitcoin Cash, and ERC20 Tokens. It was developed by a Taiwanese company called CoolBitX, which also created Sygna Bridge, a messaging service that enables Virtual Asset Service Providers to share all required compliance data.

In terms of currency selection and affordability, Ledger Nano S is one of the best offline wallets available. At €79, which is about $98 USD, it is priced similarly to Keepkey and Trezor.
The Ledger company has emerged as one of the leading hardware wallet providers in the crypto industry. They’ve received a significant amount of funding from some of the world’s top investors, and is becoming one of the industry’s leading brands.
The Nano S has a number of great safety features and is the cheapest hardware wallet with a screen. The built-in, OLED screen allows the user to confirm each transaction with a single tap of a button. The S has two physical buttons which add to its security. Users need to physically press both buttons at the same time, in order to confirm a payment. This helps to secure the device so that hackers can’t hack it. A PIN code is also required upon setup, to prevent the loss of funds, in case of a lost device.