LiBBra H Helmet Attachment
Description
Features:
- Feather weight earmuff with the measurement that is complying on the users comfort ability
- Sturdy stainless stell support that last longer than the widely used material in the market
- ABS grains are the main composition of cups and spring holder which leads to a good items timeline
- PVC leather are used for the cushion and headband, a quality that can last long
- A vibrant color code to identify easily the usage level of the earmuffs
- Adjustable length of the arms of the arch and cup swivel for greater security and comfortLiBBra H is best to be use on high noise volume place, such as car buffing, traffic area and etc.
EN Standard 352-1:2002
| Freq.Hz | 125 | 250 | 500 | 1k | 2k | 4k | 8k | H | M | L | SNR |
| Mean Value | 21.3 | 22.1 | 30.2 | 34.9 | 33.2 | 36.0 | 36.2 | ||||
| 1 Std. Dev. | 4.1 | 3.0 | 3.4 | 3.5 | 2.9 | 2.5 | 2.1 | 32 | 28 | 22 | 31 |
| APV | 17.2 | 19.1 | 26.8 | 31.3 | 30.3 | 33.5 | 34.1 |
ANSI S3.19-1974
| Freq.Hz | 125 | 250 | 500 | 1k | 2k | 3k | 4k | 6k | 8k | NRR |
| Mean Attenuation | 36.9 | 32.9 | 39.4 | 34.4 | 35.5 | 40.4 | 41.9 | 46.8 | 47.3 | |
| 1 Std. Dev. | 5.7 | 5.3 | 5.9 | 3.6 | 2.7 | 5.5 | 5.7 | 6.0 | 4.1 | 27 |
LiBBra offers 3 forms of earmuffs: Over the head earmuff, Helmet attachment an Foldable. Each form have levels (Low, Medium & High) that passed ANSI S3.19-1974 and EN Standard 352-1:2002.
1
0.72 lbs. / 0.33 kg
195x95x190 mm / 7.6×3.7×7.5 inch
20
15.8 lbs. / 7.2 kg
420x495x400 mm / 16.5×19.5×15.7 inch
0.72 lbs. / 0.33 kg
195x95x190 mm / 7.6×3.7×7.5 inch
20
15.8 lbs. / 7.2 kg
420x495x400 mm / 16.5×19.5×15.7 inch
