Binding of Isaac: Rebirth Wiki

For all Tech items, check Tech (disambiguation)

Tech.5 is an unlockable passive item.



  • The damage of the laser scales directly with Isaac's damage.
  • Unlike Technology Technology or Technology 2 Technology 2, Isaac can still fire tears from both eyes in addition to firing the laser.
  • The laser can be fired independently from tears by slightly tilting the right analog stick, just like shooting familiars.
  • Added in Repentance Unlike Technology Technology, Tech.5 Lasers do not have momentum, and fire exclusively in the cardinal directions unless Isaac has an item like Added in Afterbirth †Analog Stick Analog Stick, Added in RepentanceEye of the Occult Eye of the Occult or Added in AfterbirthMarked Marked.


  • Added in RepentanceAnti-Gravity Anti-Gravity: Creates floating laser balls that will all fire simultaneously when the fire button is released.
  • Brimstone Brimstone: Tech.5 does not fire. However, it will still fire when playing as Azazel Azazel with his short-ranged Brimstone. Since the laser scales with player damage, this can be a devastating combination.
    • Added in Afterbirth Tech.5 fires normally while Brimstone laser is charging.
  • Removed in Repentance Cricket's Body Cricket's Body: Tear delay down as expected, but no benefit from the splash effect.
    • Added in Repentance Releases a 4-way spread of tears whenever the laser hits a wall or an enemy.
  • Added in RepentanceGello Gello: Laser only fires from Isaac.
  • Added in Afterbirth / Removed in Repentance Lilith Lilith: No effect, as Lilith is inherently Blindfolded.
    • Added in Repentance Lilith fires the Tech.5 laser from her forehead as expected, though the costume doesn't appear.
  • The Ludovico Technique The Ludovico Technique: Laser is fired in the same direction that the controlled tear is moving.
  • Added in RepentanceIpecac Ipecac: Laser explodes and poisons enemies on contact.
  • Rubber Cement Rubber Cement: Laser will bounce in angle depending on the obstacle hit.

In-game Footage[]

Unlockable Achievements[]


PC KG0Z H94Y (Treasure Room adjacent to right room from spawn).

PS4 6EFG VTT0 (Treasure Room adjacent to spawn).

Switch Greedier mode only ALZM G2PC (First Golden Treasure Room)