The Pip-Boy 3000 is your characters most important tool. It is used to access your inventory, your characters stats, check how irradiated you are. It also includes a radio, a light and a very useful map that can be used for fast travel (you can only fast travel to places you have been before). Everyone who lives in an underground Vault-tec vault (such as Vault 101) is issued a standard Pip-Boy at the age of 10.
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