Focus Band is an item in the “Held items” category (Items). It costs ₽4000.
In-game descriptions
| Ruby / Sapphire · Emerald | A hold item that occasionally prevents fainting. |
|---|---|
| FireRed / LeafGreen | An item to be held by a POKéMON. The holding POKéMON may endure an attack, leaving just 1 HP. |
| Diamond / Pearl · Platinum · HeartGold / SoulSilver · Black / White · Black 2 / White 2 · X / Y · Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield | An item to be held by a Pokémon. The holder may endure a potential KO attack, leaving it with just 1 HP. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h