Full Metal Register

6★ DEF

Chronos

Skill

35–41s CT - For 12s, target gains a DMG barrier that negates 2,800–4,000 DMG.

Numbers in a range are rolled when the equip is crafted.

Crafting

Fusion Type: Chronos: a Chronos Glyph raises the chance
Extra effects: 0–2 at random: ATK UP, HP Recovery UP, Skill CT Speed UP, Break Power UP, CRI rate UP, Accuracy UP, Arts UP, BE Output UP, PHY DMG UP, MAG DMG UP, Status ailment RES UP
Passive: 3 of the same Crest Fragment can add that Crest's effect

Other 6★ DEF Fusion Equips

6★ DEF

Vital

35–41s CT - For 12s, increase allies' ◯ Element RES by 35–50%.

6★ DEF

Energy

35–41s CT - For 12s, increase all allies' PHY RES or MAG RES by 32–45%.

Eden's Canceller

6★ DEF

Thanatos

35–41s CT - For 12s, all allies gain a DMG barrier that negates 1,400–2,000 DMG.

6★ DEF

Sense

35–41s CT - For 12s, increase target's ◯ Element RES by 42–60%.

6★ DEF

Dominion

35–41s CT - For 12s, increase target's PHY RES or MAG RES by 45–65%.

Data from the Grand Crusade Guide by jeffers and .phex (Grand Summoners Official Discord).