+4 armor (while enchanted?)

[InvAsian]

sorry bout this noob question, but
what does it mean "while enchanted"?

i have like a +3 energy
and then +4 armor (while enchanted) (accessory hand held item)

is it always 4 armor?

[RepinsMirg]

It means if you have an enchantment like armor of earth cast on you then you get a +4 armor bonus.