The following is a list of the effects and duration of perks in Blackout mode.

Brawler
Effect: Increase melee damage. Gain 50 health for each successful melee attack.
Duration: 240 seconds

Dead Silence
Effect: Move quietly. Make less noise opening stashes.
Duration: 240 seconds

Iron Lungs
Effect: Increase breath hold time on siper rifles and tactical rifles. Increased breath hold time underwater.
Duration: 300 seconds

Looter
Effect: Reveal nearby stashes and loot items.
Duration: 120 seconds

Paranoia
Effect: Receive additional audible alert when targeted by an enemy.
Duration: 240 seconds

Reinforced
Effect: Reduce damage from explosions and fire. Increased resistance to flashbang, concussion, and razor wire.
Duration: 240 seconds

Skulker
Effect: Move faster while crouched and prone.
Duration: 180 seconds

Squad Link
Effect: Teammates are visible through walls.
Duration: 120 seconds