How is it different from other hardware wallet?

Other crypto hardware wallet works with USB compatible devices like laptop and PCs. CoolWallet S works with any device that has Bluetooth and it fits right into your wallet, bringing 2 factor authentication to your mobile phone or tablet Device. Unlike other wallets which require a USB interface. Coins/Tokens integration for CoolWallet S can be simply implemented via a Bluetooth OTA (Over-The-Air) update to the wallet.