Ergo ER-901
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| Design: | Invoices |
| Description: | Design: on-ear, device type: wireless headphones, design features: foldable design, functions: volume control |
| Functions: | Volume control |
| Design features: | Folding design |
| Device type: | Wireless headphones |
| Mount type: | Headband |
| Technology: | Dynamic |
| Wireless connection type: | Infrared channel |