Focus Sash(item)

Effects

An item to be held by a Pokémon. If it has full HP, the holder will endure one potential KO attack, leaving 1 HP.

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Diamond/Pearl Platinum HeartGold/SoulSilver	An item to be held by a Pokémon. If it has full HP, the holder will endure one potential KO attack, leaving 1 HP.
Black/White Black 2/White 2	An item to be held by a Pokémon. If it has full HP, the holder will endure one potential KO attack, leaving 1 HP.
X/Y O.Ruby/A.Sapphire	An item to be held by a Pokémon. If the holder has full HP, it will endure a potential KO attack with 1 HP. The item then disappears.
Sun/Moon Ultra Sun/Ultra Moon	An item to be held by a Pokémon. If the holder has full HP, it will endure a potential KO attack with 1 HP. The item then disappears.
Sword/Shield B.Diamond/S.Pearl	An item to be held by a Pokémon. If the holder has full HP, it will endure a potential KO attack with 1 HP. The item then disappears.
Scarlet/Violet	An item to be held by a Pokémon. If the holder has full HP and it is hit with a move that should knock it out, it will endure with 1 HP—but only once.