Pip-Boy 🔳
The ultimate personal computing device. It has many functions, like a personal status indicator, activity log, and an inbuilt holotape reader.
It also functions as a compass, a radio, and a Geiger counter, and can generate light from its screen equivalent to a flashlight.
V.A.T.S (Vault Assisted Targeting System) also increases your Accuracy by 1 when performing Called Shots.