- Details
- Genre: Pop
- Subgenre: Asian Pop,K-Pop
- Original Release Date: 2015-10-27
- Release Date: 11-06-2015
- Original Release Date: 10-27-2015
- Artist: F(X)
- Release Level Flags: Import
- Album Length: 0 seconds
- Explicit Content: false
- Style(s): Asian Pop, K-Pop
- Format: CD
- Other
- Product Name: 4 Walls [CD]
- Genre: Pop
- Vendor Genre: Pop/Rock
- UPC: 8809269505231
