The OPTIME IIIH540AAV hearing protection headphones are specially designed for repetitive noise such as industrial noise in factories, workshops, airports or construction sites. They are very light in weight and are carefully designed in black and green. They are also ideal for leisure activities. Its technical characteristics are as follows:
- SNR= 35 H= 40 M= 32 L= 23
| Frequency in Hz |
125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
| Average attenuation dB |
17,5 |
24,5 |
34,5 |
41,4 |
39,5 |
47,3 |
42,0 |
| Mean deviation dB |
2,3 |
2,7 |
2,0 |
2,2 |
2,0 |
4,4 |
2,8 |
| Assumed protection dB |
15,2 |
21,8 |
32,5 |
39,2 |
37,5 |
42,9 |
39,2 |