320-1000 规格参数
| Item | Hearing Band |
| Shape | Tapered |
| Band Color | Orange |
| Noise Reduction Rating NRR | 28dB |
| Plug Material | Polyurethane Foam |
| Metal Detectable | No |
| Plug Color | Yellow |
数据手册
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| Item | Hearing Band |
| Shape | Tapered |
| Band Color | Orange |
| Noise Reduction Rating NRR | 28dB |
| Plug Material | Polyurethane Foam |
| Metal Detectable | No |
| Plug Color | Yellow |