OTTO Engineering NoizeBarrier Micro Electronic Hearing Protection (V4-11029)
The NoizeBarrier Micro earplugs are electronic hearing protection for shooting ranges, plants and other loud workplaces where you still need to hear speech. They cut impulse noise by up to 40 dB and, in LO mode, steady noise by up to 15 dB. Passive NRR is 28 dB on foam tips. The plugs give up to 16 hours of active use, and the case holds up to 20 recharges.
Highlights
- LO mode leaves normal sound as it is and turns steady noise down automatically once it passes safe exposure limits.
- HI mode raises soft sounds up to 5x and also amplifies speech, without boosting loud noise.
- A touchpad on each plug switches modes, and tones tell you which one you are in.
- The water-resistant case shows charge levels on a small display and recharges the plugs.
- The earplugs are rated IP67, use balanced-armature speakers and have an integrated windscreen to suppress wind noise.
- Three eartip styles fit ear canals from 6 to 14 mm, and a repeating tone warns when charge runs low.
Shipping
We ship to all 50 U.S. states and Washington, D.C., with free standard shipping on all orders within the United States. We do not ship to U.S. territories or to APO/FPO/DPO addresses. Orders are processed within 0–1 business day, and standard transit after shipment takes 3–4 business days for most U.S. addresses. You get a tracking link by email once the order ships. Shipping policy
Returns
You can request a return within 30 days of the delivery date. Items must be unused, in the same condition as received, in the original packaging with all accessories and documentation. Return shipping is free: we email a prepaid return label that you download and print. Refunds go to the original payment method within 7 business days after the item arrives and is inspected. We do not charge restocking fees. Return and refund policy
Warranty
Products may be covered by the manufacturer's warranty, depending on the brand and product. Coverage and claim steps are set by the manufacturer: see Warranty information for brand warranty contacts. Your order confirmation email is your receipt. If you lose it, contact us and we will resend it.
Specifications
| Model | V4-11029 |
|---|---|
| Impulse protection | Up to 40 dB |
| Adaptive reduction | Up to 15 dB in LO mode |
| Passive NRR | 28 dB (foam), 23 dB (3-flange) |
| Modes | LO (automatic + blast protection), HI (enhancement + protection) |
| Frequency response | 40 Hz–16 kHz |
| Earplug runtime | Up to 16 h |
| Earplug charge time | About 6 h from empty |
| Case capacity | 20 earplug charges |
| Earplug rating | IP67 |
| Eartip fit | 6–14 mm ear canal |
| Weight | 12 oz (package) |
In the box
- Earplugs (1 pair)
- Charging case
- Maintenance kit with filter tool, spare filters and cleaning brush
- Standard 3-flange, large 3-flange and foam eartips
- Lanyard
- USB charging cable
Video
OTTO NoizeBarrier Micro and Comms Kit webinarManufacturer's video on YouTube
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