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| PartNumber | SM280404-1 | SM280408-3 | SM280408-1 |
| Description | Speakers & Transducers Dynamic Speake | Speakers & Transducers Dynamic Speake | Speakers & Transducers Dynamic Speake |
| Manufacturer | DB Unlimited | DB Unlimited | - |
| Product Category | Speakers | Speakers | - |
| Series | SM | SM | - |
| Product | Speakers | Speakers | - |
| Type | Dynamic | Dynamic | - |
| Packaging | Bulk | Bulk | - |
| Termination Style | Wire Leads | Wire Leads | - |
| Mounting | Flush Mount | Flush Mount | - |
| Operating Temperature Range | - 40 C to + 66 C | - 40 C to + 66 C | - |
| Height | 5 mm | 3.5 mm | - |
| Frequency | 4.5 kHz | 6 kHz | - |
| Impedance | 4 Ohms | 8 Ohms | - |
| Sound Pressure Level | 90 dBA | 88 dBA | - |
| Shape | Round | Round | - |
| Diameter | 28 mm | 28 mm | - |
| Power Rating | 200 mW | 200 mW | - |
| Dimensions | 5 mm H | 3.5 mm H | - |
| Height in | 0.197 in | 0.138 in | - |
| Height mm | 5 mm | 3.5 mm | - |
| Cone Material | Mylar | Mylar | - |