The dome makes a clicking sound when rotated - but it doesn't appear to have any functionality
There are no hidden gadgets or compartments on the droid
The dome has a blue see-through plastic window on the top, so when light shines through the red eye on the front of the droid lights up
The power harness holds the droid well
PACKAGING TEXT
A blue astromech droid sporting yellow trim, R2-B1 is one of a fleet of mechanics on the Naboo Royal Starship. It risked its circuits to perform repairs while under heavy incoming fire.