The Vengeance Part of Bracers of Sworn Vengeance

[drsparnum]

Here is the description of the Bracers of Sworn Vengeance:
Description
These white leather bracers have delicate elven runes etched upon them, one reading “swift defeat” and the other “vengeance.” Once per day, as an immediate action when the wearer takes hit point damage from a target, he may cry out, “Death to those who wrong me!”, swearing vengeance against the attacker. The wearer gains a +1 competence bonus on weapon attack rolls made against the target of his sworn vengeance, and deals an additional 2d6 points of damage on successful weapon attack rolls.

For the duration of the effect, the wearer takes a –2 penalty on attack rolls against any target other than his sworn enemy. These bonuses and penalties last for 24 hours or until the sworn enemy is slain or destroyed by the wearer, whichever comes first. If the wearer fails to slay the target of his oath, these bracers cannot be used again until 7 days have passed.

Question: If I'm not the player to actually knock out the target, but someone in my party kills the target, do I still need to wait the 7 days for the bracers to reactivate?

[Claxon]

Yeah, if someone else kills your quarry the bracer's don't work for a week. You need to slay the target yourself or it wont function. However, you only take the the -2 penalty on attack rolls for as long as you receive the bonus, which will end when the target dies 24 hours after you activated them if you don't kill the target.

And it's important to note, simply knocking out the target does not fulfill the condition to end the effect.

If you knock out the target and it does from someone/something else then you wont be able to use the bracers for a week.

Conversely, if someone else knocks out, but doesn't kill the target you can slay them to have the use available to you again.