Summary: Never connect to the Internet, never connect to electronic devices, only transmit data through QR codes, and it is completely open source and extremely secure. The 4-inch large screen is easy to use and intuitive to operate. The price is right and cost-effective.

Summary:The 4-inch touch screen and two-dimensional code transmission ensure simple operation, safety and ease of use. Different versions have different designs in terms of anti-disassembly, waterproof, shockproof, and material. The highest configuration is more in line with the requirements of cold wallets in terms of material and safety certification, but the price is too high.

Summary:The 4-inch touch screen is not connected to the Internet or electronic equipment, which is relatively safe. However, only a part of the code base has been opened, and when the wallet is used for the first time, users will be assigned mnemonic words according to the default order of mnemonic words. Merchants are likely to obtain users' mnemonic words according to the rules.

Summary:Open source, but you need to connect to a computer when setting up, and transactions need to be done through Bluetooth. This is an indirect network and there is a risk of hacker attacks. The operating screen is small, the price is high, and the price/performance ratio is average.

Summary:Compared with Trezor One, TrezorT has a larger size and a full-color touch screen with better texture, but the matching plastic material has disappointed many users. Need to connect to the computer settings, use Bluetooth to connect to the network when trading, the security is average.

Summary:With a large 3.97-inch screen and a 13 million-pixel camera, the operation is simple and the experience is good. The hot and cold ends are separated, and the transaction data is transmitted through the QR code to ensure security. However, it is not open source. It is possible for merchants to allocate mnemonic words in order to obtain user mnemonics, and the price is too high and the price-performance ratio is average.

Summary:The 128*32 OLED dot matrix screen is not intuitive enough. It needs to be connected to a PC or mobile device via USB to trade, and the security is low. Different wallets need to be downloaded and installed for different currencies. The process is complicated, but the price is low.

Summary:Trezor was once known as the most cost-effective cold wallet. The small size and 128*64 oled screen is easy to carry, but there are only two buttons and a small screen, which is somewhat inconvenient in operation. At the same time, a computer or mobile phone needs to be connected during setup and transactions, which is less secure.

Summary:Bank card style, no screen, no autonomous operation, through NFC transmission, support Android phones with NFC function, Apple system can not match without NFC function. The mobile app has both cold wallet and hot wallet functions. The mobile phone needs to be connected to the Internet and has general security.