Price history
| Date | Product name | Price | List price |
|---|---|---|---|
| Tai nghe Sennheiser MM80I | 4,220,000 | 5,432,000 | |
| Tai nghe Sennheiser MM80I | 4,560,000 | 5,432,000 | |
| Tai nghe Sennheiser MM80I | 4,610,000 | 5,432,000 | |
| Tai nghe Sennheiser MM80I | 4,850,000 | 5,432,000 | |
| Tai nghe Sennheiser MM80I | 4,850,000 | 5,432,000 | |
| Tai nghe Sennheiser MM80I | 4,850,000 | 5,432,000 |