# Battle XP +4: Visual and Auditory Training Level 1 research

> "I'm sorry. I only wanted your attention to show you this fight." Watch a battle between legendary fighters.

Canonical: https://lostark.wiki/database/stronghold-research/battle-xp-4-visual-and-auditory-training-level-1-320031

"I'm sorry. I only wanted your attention to show you this fight."  
Watch a battle between legendary fighters.

## Facts

- **Category**: Roster Growth Boost
- **Time Taken**: 0d 01:00:00
- **Required Action Energy**: 500
- **Research Cost**: 150 Gold
- **Stronghold XP gained**: 1,000
- **Research Requirements**: Lab Lv. 2; Character Lv. 55 or above; [Battle XP +3: Tweezer Training Level 1](https://lostark.wiki/database/stronghold-research/battle-xp-3-tweezer-training-level-1-320021)

## Related

- [Required by research](https://lostark.wiki/database/stronghold-research/battle-xp-4-visual-and-auditory-training-level-1-320031#relationships) (2)
- [Research Requirements](https://lostark.wiki/database/stronghold-research/battle-xp-4-visual-and-auditory-training-level-1-320031?relation=research_requires#relationships) (1)
- [Required Materials](https://lostark.wiki/database/stronghold-research/battle-xp-4-visual-and-auditory-training-level-1-320031?relation=research_materials#relationships) (2)

### Required by research

1–2 of 2

| Name | Details |
| --- | --- |
| [Battle XP +4: Visual and Auditory Training Level 2](https://lostark.wiki/database/stronghold-research/battle-xp-4-visual-and-auditory-training-level-2-320032) |  |
| [Battle XP +5: Monster Book Level 1](https://lostark.wiki/database/stronghold-research/battle-xp-5-monster-book-level-1-320041) |  |

## Related

- [Home](https://lostark.wiki/)
- [Stronghold Research](https://lostark.wiki/database/stronghold-research)