Knight's Pennon (Battle) Duration

[deinol]

My character has one of these:

PRD wrote:

KNIGHT'S PENNON
Price varies; Aura moderate abjuration or transmutation; CL 6th; Weight 1 lb.
Battle 4,500 gp;
This narrow cloth flag is made to attach to the end a knight's lance, though it can be flown from a spear, polearm, or even a staff. It has no effect if not mounted appropriately. A knight's pennon grants different benefits depending on its color and design.
Battle: The red knight's pennon of battle allows its bearer to benefit from heroism once per day.

So when it says "benefit from heroism once per day", does that mean for one round/action, or do I activate it for a standard action and it lasts 60 minutes (because the item has caster level 6th)?

I'm guessing the later, since otherwise it's not to useful. But usually items are much more explicit about caster level for items casting spells.

[dragonhunterq]

You are right, it is the latter.

PRD wrote:

An item's caster level indicates its relative power. It also determines the item's saving throw bonus, as well as range or other level-dependent aspects of the item's powers