Wallet can not only collect money with bank cards, credit cards, ID cards and other monetary instruments or certificates in a small bag, but also be easy to carry and use, usually only the size of a palm. Nowadays, in addition to the above functions, wallets can also be used as family photo folders and ID card folders.

Alarm refers to reporting an emergency or sending an emergency signal to the police by telephone, internet, letters, etc. Protect the state, public interests, personal, property and other rights of oneself or others from losses.