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| Model No. | Product Sample | Rated Voltage | Operating Voltage | Resistance | Rated Frequency | SPL at 10cm | Current Consumption | Dimension | Data Sheet |
| | (V) | (V) | (Ω) | (Hz) | (dB) | (mA) | (D(Φ)*H(mm)) | |
| OBO-0901A-A2 |  | 1.5 | 1 ~ 2 | 5.5±1 | 2,730 | Min. 85 | Max. 80 | 9.0 * 4.0 | |
| OBO-0903A-A2 |  | 3.0 | 2 ~ 4 | 15±3 | 2,730 | Min. 85 | Max. 80 | 9.0 * 4.0 | |
| OBO-0903E-C2 |  | 3.0 | 2 ~ 4 | 10±2 | 3,200 | Min. 93 | Max. 150 | 9.0 * 4.0 | |
| OBO-0905A-A3 |  | 5.0 | 4 ~ 6 | 40±4 | 2,731 | Min. 85 | Max. 60 | 9.0 * 5.5 | |
| OBO-0905B-A2 |  | 5.0 | 3 ~ 7 | 25±3 | 3,200 | Min. 85 | Max. 80 | 9.0 * 5.0 | |
| OBO-1001R-A201 |  | 1.5 | 1 ~ 3 | 5.5±2 | 2,730 | Min. 85 | Max. 80 | 9.6 * 5.0 | |
| OBO-1003R-A2 |  | 3.0 | 2 ~ 4 | 25±3 | 2,730 | Min. 85 | Max. 70 | 9.6 * 5.0 | |
| OBO-1005R-A201 |  | 5.0 | 4 ~ 6 | 30±5 | 2,730 | Min. 85 | Max. 100 | 9.6 * 5.0 | |
| OBO-1201A-A2 |  | 1.5 | 1 ~ 2 | 6.5±1 | 2,400 | Min. 75 | Max. 70 | 12.0 * 9.0 | |
| OBO-12AP-87 |  | 1.5 | 1 ~ 3 | 42±6 | 2,048 | Min. 87 | Max. 15 | 12.0 * 8.5 | |
| OBO-1201G-A1 |  | 1.5 | 1 ~ 2 | 16±2 | 2,048 | Min. 85 | Max. 55 | 12.0 * 8.5 | |
| OBO-1201G-B1 |  | 1.5 | 1 ~ 3 | 42±6 | 2,048 | Min. 85 | Max. 15 | 12.0 * 8.5 | |
| OBO-1201M-A3 |  | 1.5 | 1 ~ 3 | 16±2 | 2,048 | Min. 75 | Max. 30 | 12.0 * 5.5 | |
| OBO-1201M-B3 |  | 1.5 | 1 ~ 3 | 42±6 | 2,048 | Min. 70 | Max. 15 | 12.0 * 5.5 | |
| OBO-1203M-A3 |  | 3.0 | 1 ~ 5 | 16±2 | 2,048 | Min. 85 | Max. 70 | 12.0 * 5.5 | |
| OBO-1201W-A1 |  | 1.5 | 1 ~ 3 | 6.5±1 | 2,731 | Min. 85 | Max. 70 | 12.0 * 7.5 | |
| OBO-1205A-D2 |  | 5.0 | 3 ~ 7 | 42±5 | 2,048 | Min. 82 | Max. 50 | 12.0 * 9.0 | |
| OBO-1205A-D5 |  | 5.0 | 4 ~ 6 | 42±5 | 2,048 | Min. 82 | Max. 50 | 12.0 * 9.0 | |
| OBO-1205A-E2 |  | 5.0 | 3 ~ 8 | 45±5 | 2,048 | Min. 85 | Max. 40 | 12.0 * 9.0 | |
| OBO-1205G-A1 |  | 5.0 | 3 ~ 7 | 140±14 | 2,000 | Min. 85 | Max. 40 | 12.0 * 8.5 | |
| OBO-1205M-B3 |  | 5.0 | 3 ~ 8 | 42±6 | 2,048 | Min. 85 | Max. 50 | 12.0 * 5.5 | |
| OBO-1206A-A2 |  | 6.0 | 4 ~ 8 | 45±6 | 2,400 | Min. 85 | Max. 50 | 12.0 * 9.0 | |
| OBO-1206G-C1 |  | 6.0 | 4 ~ 8 | 73±6 | 2,048 | Min. 82 | Max. 30 | 12.0 * 8.5 | |
| OBO-1212A-A2 |  | 12.0 | 6 ~ 15 | 140±14 | 2,400 | Min. 85 | Max. 40 | 12.0 * 9.0 | |
| OBO-1212A-C2 |  | 12.0 | 6 ~ 15 | 140±14 | 2,400 | Min. 85 | Max. 40 | 12.0 * 9.0 | |
| OBO-1212A-D2 |  | 12.0 | 7 ~ 16 | 140±14 | 2,400 | Min. 85 | Max. 40 | 12.0 * 9.0 | |
| OBO-1606A-A2 |  | 6.0 | 4 ~ 8 | 50±5 | 2,048 | Min. 85 | Max. 40 | 16.0 * 14.0 | |
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