Features and Benefits:
+ Adjustable headband for secure fit; compact folding design for convenient storage.
+ Includes AUX input and 3.5 mm connection cord for MP3 players or other audio devices. Integrated power volume knob.
+ Actively listens and automatically compress sounds when ambient sound reaches 82 dB.
+ Built-in directional microphones amplify range commands and other ambient sounds to a safe 82 dB, stereo speaker providing more natural listening and enhanced communication.
+ Includes 2 AAA batteries; automatic shut-off feature after 4 hours increases battery life; approximately 150 hours of battery life; works well and long with Polaroid AAA Batteries.
EN 352-6:2020
-6.4 dBV (478.6 millivolts)
EN 352-4:2020
H=100.6
M=100.2
M=100.2
L=93.6
EN 352-1:2020 SNR 29dB
ANSI S3. 19-1974 Noise Reduction Rate
NRR 21dB CSA Class B
NRR 21dB CSA Class B
Sound Amplification Electronic Earmuff
| Frequency [ Hz ] | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
| Sound attenuation Mf [ dB ] | 19.5 | 27.2 | 37.0 | 42.1 | 38.6 | 42.4 | 38.1 |
| Standard deviation Sf [ dB ] | 3.7 | 3.3 | 3.7 | 4.4 | 3.3 | 3.8 | 5.2 |
| APV Mf - Sf [ dB ] | 15.8 | 23.9 | 33.3 | 37.7 | 35.4 | 38.6 | 32.9 |
| SNR = 29dB | H = 34dB | M = 27dB | L = 19dB |
| SNRm - 31.1dB | Hm = 36.3dB | Mm - 28.8dB |
Lm = 20.9dB
|
| SNRs = 1.6dB | Hs = 2.6dB | Ms = 1.7dB |
Ls = 1.9dB
|