详细说明
EE390 Hearing protector
| Frequency HZ | 125 | 250 | 500 | 1000 | 2000 | 3150 | 4000 | 6300 | 8000 |
| Mean att. | 9.0 | 19.8 | 31.0 | 34.8 | 36.4 | 38.3 | 39.1 | 40.9 | 37.7 |
| Std dev. | 2.9 | 5.4 | 5.4 | 4.8 | 3.7 | 3.7 | 3.0 | 3.7 | 3.7 |
1. This Stereo Hearing Protection is specially designed over-ear hearing protectors not only protect your hearing from loud sources such as gunfire, but also allow you to hear normal conversation, range commands, even the sound of game in the woods.
2. The HPD features an electronic amplification mechanism that clarifies low pitch sounds, but “shut down” within milliseconds when sounds above 85 dB.
3. On/Off switch with volume control on one shell.
4. Powered by two AA batteries (not included).
5. Receiving voice at frequency: 400 to 4, 000Hz making voice clearer
6. Certificate: CE, RoHS.