Where are these manufactured?

I’m pretty sure these are made in the plant down the street from me. Check their website. Otto Engineering of Carpentersville Illinois.

Can volume be adjusted for each ear

Yes, but there are only TWO settings... and it’s not as good on sound canceling / reduction when firing weapons as a standard peltor or similar ear pro device.

Is it possible to replace the rechargable batteries as they age, or you have to buy another set? (and if not replaceable, approx. how many charges?)

Not replaceable. You would have to buy another set

Anyone use these for loud music, or concerts?

I’ve use these for figure eight derbies and they were great but they’re not a license Dealer and they will not honor the one-year warranty

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OTTO Engineering NoizeBarrier Micro, Black, V4-11029

OTTO Engineering NoizeBarrier Micro, Black, V4-11029

Product ID: 735082825

Details

Brand
OTTO
Color
Black
Material
Silicone
Recommended Uses For Product
Noise
Size
1 Count (Pack

⚡Waterproof fast charging case

🔊5x softer sound amplification

🛡️40 dB impulse noise protection

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₩204514569

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Description

🦻 Elevate your hearing game — protect, amplify, and conquer every soundscape!

ONE TOUCH SMART CONTROL - Seamlessly switch between modes with a single button for effortless operation.
ADAPTIVE NOISE ATTENUATION - Automatically adjusts noise reduction up to 15 dB for comfort and clarity.
ALL DAY POWER DURABILITY - Waterproof charging case powers up to 20 earplugs, ensuring you never miss a moment.
CRYSTAL CLEAR HEARING ENHANCEMENT - Amplifies subtle sounds up to 5x for unmatched situational awareness.
INDUSTRY LEADING NOISE PROTECTION - Blocks impulse noise up to 40 dB, safeguarding your hearing in high-impact environments.

The OTTO NoizeBarrier Micro HD Ear Plugs deliver premium hearing protection with up to 40 dB impulse noise reduction and adaptive attenuation up to 15 dB. Featuring a Hearing Enhancement Mode that amplifies soft sounds 5x, these sleek, waterproof earplugs offer high-definition sound quality controlled via a one-button touchpad. The included waterproof charging case powers up to 20 earplugs, making them ideal for professionals and enthusiasts in shooting, industrial, and noisy environments.

Specifications

ASIN	B07SSDDND1
ASIN	B07SSDDND1
Amazon Bestseller	#348,511 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #2,252 in Earplugs
Batteries	2 Lithium Ion batteries required. (included)
Brand Name	OTTO Engineering
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (213)
Department	Uni-Adult
Global Trade Identification Number	00737488048100
Item Dimensions	13.5 x 13.2 x 6.4 cm
Item Form	Pair
Item Weight	0.75 Pounds
Item model number	V4-11029
Manufacturer	OTTO Engineering
Manufacturer	OTTO Engineering
Manufacturer Part Number	V4-11029
Material Type	Silicone Plastic
Model Name	V4-11029
Model Number	V4-11029
Noise Attenuation	40 decibels
Noise Reduction Rating (NRR)	28 Decibels
Number of Items	1
Number of Pieces	2
Package Size Name	Pack of 2
Product Dimensions	13.46 x 13.21 x 6.35 cm; 340.19 g
Product Style	No Cord
Recommended Uses For Product	Noise Protection
Reusability	Partially Reusable
Single Number Rating (SNR)	15 Decibels
Size	1 Count (Pack of 1)
Specific Uses For Product	Used to amplify soft sound in industrial sites, concerts, meetings, etc
UPC	737488048100
Unit Count	1 Count

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