










🔇 Stay sharp, stay protected — silence is the new power move.
The 3M Peltor Optime I H510AC1 earmuffs deliver professional-grade hearing protection by reducing noise levels up to 27dB. Designed with a lightweight alloy steel frame and soft, fluid-foam cushions, they offer a pressure-free, adjustable fit ideal for prolonged use in noisy environments. Perfect for professionals using power tools or working in industrial settings, these earmuffs combine durability, comfort, and hygiene with easily replaceable parts.









| Manufacturer | 3M |
| Part number | H510AC |
| Item Weight | 206 g |
| Product Dimensions | 13 x 10.5 x 19.5 cm; 206 g |
| Item model number | H510AC |
| Size | Adult - Standard |
| Colour | Lemon Tree |
| Style | Single |
| Material | Alloy Steel |
| Pattern | Solid |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Measurement System | Metric |
| Included components | 1 x Comfort Ear Muffs |
| Batteries included? | No |
| Batteries Required? | No |
M**Y
Superb noise reduction even for snores.
Really great quality with superb adjustment ability. You just pull down on the ear muffs and fit comfortably on your ears. They give amazing ear protection and are nice and light weight. I use mine for sleeping as my husband snores. They give amazing noise reduction and are brilliant value for money.
M**.
Effective noise reduction
These work great, I use them whilst operating woodwork machinery. My daughter likes to wear them to firework displays. They effectively reduce noise to comfortable and safe levels. They are comfortable and fit age age 9+ to adult.
R**E
slimmer design
optime II are better for noise reduction but these are thinner so can sleep with them in
D**T
Does the job
I'm currently re-wiring/renovating our new house and needed to protect my ears from the noise of drilling and chasing in the hard brick. I started off using my old pair of musician's ear plugs, which worked well enough. These things are clearly much better for the purpose though as the reduction in sound levels is very substantial indeed. Whilst wearing these I have been using a wall chasing machine and SDS drill with electrical box sinking kit (hardly the quietest of products) and my hearing has remained unaffected.I find them comfortable enough to wear, even with dust mask and safety glasses added in, although I have to put the safety glasses on last, or the ear defenders squash my ears against the arms of the glasses. I can't blame the product for this, as this is more likely down to the shape of my bonce rather than any design flaw. Nonetheless, it's worth bearing in mind especially if you're a glasses wearer.I've used these for countless hours now and am still happy with them. I wouldn't normally go for anything yellow, but at least that makes it obvious to the wife that I'm wearing them so she doesn't get too angry when I don't respond to her inane questions...
J**Y
Great… shame about lack of colours
Really great slimline ear protectors, perfect for drowning out noise. Room inside the cups if you want to wear earphones at the same time (I don’t like active noise cancelling headphones, and haven’t yet found a passive noise cancelling set which offers this level of db blockage). Shame they only come in yellow, but I’m just eccentric enough to pull of bright yellow in the office
J**Y
Does what it says on the tin!
Good quality ear defenders, comfortable, lightweight, and block the required amount of noise. Fit nicely in a bag. Good value.
S**Y
Brill
Brill
R**K
Quality noise cancelling ear defenders
Really pleased with these. Well made
Trustpilot
2 days ago
2 weeks ago