A lab and stone upgrade that increases the duration of Chrono Field by 1 second per level.
| ‣ | Type | Common | Rare | Epic | Legendary | Mythic | Ancestral |
|---|---|---|---|---|---|---|---|
| Chrono Field Duration substat | ‣ | n/a | n/a | n/a | 4s | 7s | 10s |
https://the-tower-idle-tower-defense.fandom.com/wiki/Lab/Chrono_Field_Duration#Chrono_Field_Duration