Speech brought forward, background hushed
Built-in noise reduction lifts the voice you're trying to follow and softens the clatter behind it.
Certus One
1 Pair
€179,99
Sale price
€179,99
Regular price
€309,99
Skip to product information
Certus One™
Stop Missing Out. The Certified Hearing Aid That Restores Clear Hearing Instantly. Invisible, and Thousands Less Than the Clinic.
€179,99
Sale price
€179,99
Regular price
€309,99
#1 Rated Certified OTC Hearing Aid in Ireland
A real hearing aid, not a cheap ‘amplifier’16h per charge, 60h with case. No fiddly batteriesNoise reduction: hear the words, not the roomInvisible 2g in-ear fit. Nobody has to know
How many pairs?
One pair covers both ears
1 Pair
€179,99€309,99
Best value
2 Pairs
€289,99€619,98
For a partner, or for both parents — the second pair is €110,00, not €179,99.
Price will go back to normal in --:--
The Certus 90-Day Hear-Every-Word GuaranteeWear them for three full months of real conversations: dinners, phone calls, the TV. If your hearing does not noticeably improve, send them back for a full refund. No questions asked.
★★★★★Verified Customer
“I can finally hear my granddaughter’s little voice on the phone without saying ‘sorry’ every five seconds. The lads haven’t even noticed.”
Brian T. · Verified Customer
Certified OTC hearing aidInvisible in-ear fitBuilt-in noise reduction2-minute setup, no app16h charge · 60h with case90-day home trial2-year guarantee
Real people. Real conversations back.
They stopped nodding along and started joining in again.
Swipe to see more
bridie.k.mayo
“I drop them in the case by my bed like my phone. No more fiddly batteries rolling under the couch.”
pat.w.setup
“Dad's last pair sat in a drawer for two years. These went in on day one and he hasn't taken them out since.”
noreen.m.everyday
“I'd started smiling and nodding and quietly bowing out of conversations. Now I'm back chatting for hours.”
donal.h.hears
“My granddaughter's little voice on the phone, clear as anything. And nobody at the club has noticed a thing.”
Rated 4.8/5 by 541 verified reviews · read their reviews below
The quiet pullback
Stop nodding along. Start hearing every word.
It creeps in slowly. The TV gets a little louder every year. You ask people to repeat themselves, then stop asking and just nod along instead. You sit a bit quieter at the table because following the chatter is exhausting, so you stop trying.
It's not that you don't care. You're missing half of what's said, and pulling away feels easier than asking "sorry, what?" one more time. You're not alone, and it isn't your fault.
Certus One brings the voices back: your partner, your friends, the person beside you. Instantly, invisibly, and without a clinic, an appointment, or the thousands a prescription pair costs.
You've probably tried these already. Here's why they failed:
✕
Turning the TV up (again)
Everyone else in the room gets blasted out while you still miss half the dialogue.
✕
Cheap pharmacy amplifiers
Bulky, whistly, one-volume-fits-all boxes that make every sound louder, not clearer.
✕
Just nodding and hoping
Pretending to follow along is exhausting, and it slowly pulls you out of the conversation altogether.
✓
What actually works: a certified hearing aid built for speech
Certus One's ClearVoice™ SpeechLift System lifts the voice in front of you and pushes background noise down, at a fraction of a prescription price.
The simple science
Meet the ClearVoice™ SpeechLift System
The 3-stage sound engine built into every pair of Certus One, designed to push speech forward and push noise back.
1
Capture: it picks up every sound
A tiny built-in microphone catches the voices and sounds around you: the conversation, the phone, the TV.
2
SpeechLift: it lifts words above the noise
The ClearVoice™ chip pushes speech to the front and pulls background hum and whistle down, so you hear the words, not the room.
3
Deliver: it hands you the clarity
Clear, comfortable sound goes straight into your ear at the volume you choose. No straining, no “sorry, what?”
A certified OTC hearing aid, built for mild-to-moderate everyday hearing loss. Real hearing aid technology, not a gimmick, and 541 verified reviews back it up.
Life after Certus
So tiny and invisible, nobody will ever know your secret. For good.
You deserve to feel like yourself in every conversation, not like you're one step behind it.
Ask “what?” a lot less
You catch what was said the first time, instead of guessing or asking someone to repeat it.
Actually join the table talk
Dinners, calls and quiet chats stop being something you sit through and start being something you take part in.
Nobody has to know
At 2g and tucked inside your ear canal, they're yours to mention or not. Most people never notice.
Confidence without the clinic price tag
Clearer everyday hearing without appointments, waiting lists or a four-figure bill.
What to expect
From the first listen to a different daily life
Sound either includes you or quietly leaves you out. Here is what changing that feels like, with 90 days to prove it risk-free.
First listen
The room gets clearer the moment you put them in
You notice speech separating from background hum within the first few minutes of wear.
Day 1
You stop asking “sorry, what?”
Conversations at normal volume start landing the first time, not the second or third.
Week 1
You stop bowing out of the chatter
Dinners, calls and group conversations feel worth joining again instead of exhausting to follow.
Month 1
You forget you're wearing them
Certus One becomes part of your day instead of a device you think about. Which is the entire point.
Everything you want from a hearing aid, nothing you don't
Premium home design
So small, most people won't notice
An invisible-in-canal fit that sits hidden inside your ear, just 2g and smaller than your fingertip.
Rechargeable: zero battery fumbling
Pop them in the pocket case. A full charge lasts 16 hours, with up to 60 total hours of hearing on the go.
No apps. No pairing. No frustration.
We left out the fiddly apps and Bluetooth pairing on purpose. One button sets your volume and mode. Built for people who just want to hear, not manage another gadget.
“Will I actually hear better, or will it just whistle?”
Fair question, most bad amplifier experiences come down to a poor seal and crude processing. Here is the honest answer.
Built-in noise reduction tackles the whistle
Most whistling comes from a poor seal and crude amplifiers. Certus One uses noise-reduction processing and a snug fit to keep the sound clean.
Designed for mild-to-moderate loss
These lift everyday speech and sound to a comfortable, clearer level. We are upfront that they are not for profound loss, which keeps expectations right.
12 ear tips, including anti-whistling tips
A loose fit is the number-one cause of whistling. Included standard and anti-whistling tips help you find a comfortable, secure seal.
Still unsure?
Wear Certus One at home for 90 days: three months of dinners, calls and telly. If it is not right for you, send it back for a full refund.
Independent product review
An audiologist explains why Certus works
Years spent fitting prescription hearing aids in clinic. Certus One is the first certified sub-€200 OTC pair she tells her own patients to actually try.
Most cheap hearing aids make everything louder. Good ones make speech clearer.
“In clinic, I fit hearing aids every day, and the question is always the same: does the processing lift speech, or does it just make the whole room louder? Certus One’s ClearVoice system genuinely does the former, and the invisible fit removes the biggest reason patients stop wearing their hearing aids every day: feeling seen wearing them.”
LB
Laura B.
Audiologist, independent reviewer
The honest maths
What clear hearing actually costs in Ireland
Same goal: hear every word again. Three very different bills.
Option 1
Private audiologist
€1,500–€4,000+ per pairHearing tests, fittings and follow-up appointments. The right route for severe or complex loss, and a very big bill for everyday mild-to-moderate loss.
Option 2
The public route (HSE)
“Free”, but you waitA referral first, then public waiting lists that can run months. The PRSI hearing aid grant covers up to €500 per ear if you have the contributions, and the rest of the bill is still yours.
Option 3
Certus One
€179,99 todayA certified OTC hearing aid for mild-to-moderate loss. At your door in days, in your ears in 2 minutes, with 90 days at home to prove itself.
90-day money-back · 2-year guarantee · Free Irish shippingCompare before you buy
Why Certus is different
Certus One
Cheap amplifiers (€30–90)
Certified OTC hearing aid
✓
×unregulated ‘amplifier’
Invisible in-ear fit
✓
×bulky, visible case
Built-in noise reduction chip
✓
×one-volume-fits-all
Rechargeable: 16h charge, 60h with case
✓
×fiddly tiny batteries
12 ear tips for a snug, no-whistle fit
✓
×one generic tip
Fast dispatch, fully tracked
✓
×slow, unclear origin
90-day home trial
✓
×30 days at best
2-year guarantee
✓
×3 months at best
Proven results
What 541 verified customers report
*Based on analysis of 541 verified reviews.
86%
Rate it 5 stars
and say they would choose Certus One again.
88%
Notice clearer conversations
within their first week of everyday wear.
9/10
Recommend it to family
most often instead of a prescription pair costing thousands more.
Customer Reviews
4.8
Based on 541 reviews
100% verified buyers
Every review here was left by someone who bought Certus One from us. Critical reviews are never edited or removed.
Certus One in real life
S. SheehanVerified buyer
Happy after six months, with two small things
First, the light on the case is too faint to read in daylight and I have taken to charging overnight so I never have to look at it. Second, the low battery warning in your ear is quieter than everything around it, so I have missed it twice. Neither is enough to knock more than a star off and I'd buy them again tomorrow.
Was this helpful?
KevinVerified buyer
Wore them to my granddaughter's wedding in Kilkenny
My wife ordered them about two months before because she was tired of me missing half of every family occasion. I wasn't convinced and honestly I only put them in that morning for the sake of peace. I heard the whole speech from the best man. Every word of it. I haven't managed that at a wedding in fifteen years, you laugh when the room laughs and hope you got it right. Volume was fine straight out of the box, we never touched it. Middle tips, the ones already on. Comfortable from nine in the morning until two the following morning. If you are putting it off, do it before the thing you are dreading, not after.
Was this helpful?
John McLoughlinVerified buyer
Eighteen months on the HSE list and I gave up waiting
I have the medical card so I was entitled to go public, and I'm not giving out about the audiology people because they're run off their feet. But eighteen months is a long time when you have stopped answering the phone to your own sister. My son found these. They are not what the hospital would have given me and I know that. They got me back into conversations while I wait, and when the letter comes I'll still go.
Was this helpful?
AidanVerified buyer
I stopped going out and never noticed it happening
This is a bit personal but I will put it up in case somebody else recognises themselves. Over about two years I quietly stopped going anywhere. It was never a decision. I'd find a reason to skip the club, then the card game, then the family things, and one day I worked out I had not had a proper conversation with anyone in a fortnight. It is easier to stay at home than to keep asking people to say it again. My daughter got me these in the spring. Rang my sister last week and we were on for an hour and ten.
Was this helpful?
Bláthnaid O'TooleVerified buyer
Sound is good, my ears will not have it
This is a comfort review rather than a sound review. When they're in and the fit is right they do a genuinely good job. After five hours my canals ache and I have to take them out for an hour, and by evening I have given up. I have narrow canals and have never managed earphones either, so I suspect this was always going to be my problem rather than the product's.
Was this helpful?
Maire FarrellVerified buyer
Three generations in the one kitchen at Christmas
Fourteen of us in my daughter's house in Naas, everyone talking over everyone. I usually last about an hour of that and then go and sit in the good room with the dog and pretend I'm tired. This year I stayed at the table untill nine. Did I catch every single thing? No. Did I catch enough to be in it? I did, and I haven't been able to say that at a family thing since before the pandemic. 🙂
Was this helpful?
Bought a Certus One? Write a review — It takes two minutes and helps the next person decide.
Wearing them in 2 minutes, even if "tech" isn't your thing
No app. No account. No appointment. Out of the box to clearer sound in three steps.
Step 1
Charge the aids in the case with the included USB-C cable until the lights show full.
Step 2
Choose the soft ear tip that fits best and gently pop an aid into each ear.
Step 3
Set the volume to a comfortable level. That's it. You're hearing clearly.
What's in the box
Out of the case and into your ears in under 2 minutes
- ✓1 pair of Certus One invisible hearing aids
- ✓Rechargeable portable charging case
- ✓12 comfort ear tips (3 sizes, incl. anti-whistle)
- ✓Cleaning brush & USB-C charging cable
- ✓Large-print, plain-English guide
No confusing apps, no mandatory subscription, no clinic visit. Charge them, pop them in, and start hearing more clearly the same day.
Is Certus One the obvious choice for you?
For people tired of nodding through conversations they missed.
Best for
- ✓You miss parts of everyday conversations
- ✓You want a discreet hearing aid that does not look old-style
- ✓You prefer rechargeable devices over tiny batteries
- ✓You want to try clearer hearing at home first
Choose another option if
- !You have sudden hearing loss, pain or discharge
- !You need a prescription device for severe or complex hearing loss
- !You want a device fitted and tuned by a clinician in person
- !You are unwilling to test different ear tips for a proper fit
If the first list sounds like you, Certus One is built for exactly that job. And you have 90 days to prove it.Buy Now →
Technical Specifications
Built for daily useSee full specifications
- Type
- Certified OTC completely-in-canal (CIC) hearing aids, rechargeable, sold as a pair
- Fit
- Invisible in-canal; 2g each (2.3 x 1.2 x 0.9 cm); 12 ear tips (3 sizes)
- Sound control
- Built-in noise reduction; one-button volume and mode with memory recall
- Best for
- Mild-to-moderate hearing loss
- Battery life
- Up to 16 hours per charge
- Charging
- About 2 hours via USB-C charging case
- Case top-ups
- Up to 60 hours total, recharging the aids about 4 times
- Frequency range
- 290 Hz - 4500 Hz
- In the Box
- 1 pair of aids · charging case · 12 ear tips · cleaning brush · USB-C cable · guide
- Warranty
- 2-year Certus brand guarantee
Try Certus One Risk-Free
Order today and wear them at home for three full months: at the dinner table, on the phone, in front of the TV. If they're not right for you, return them any time within 90 days for a full refund. No questions, no hassle.
Still deciding if Certus fits your day?
Will people be able to see them?
Very unlikely. They sit completely inside your ear canal and are virtually invisible. At just 2g and smaller than your fingertip, most people won't notice them at all.
Will they whistle or buzz?
They're built with noise reduction to keep sound clean, and the 12 included ear tips (3 sizes, including anti-whistling tips) let you get a snug seal (a loose seal is the main cause of whistling). Get the fit right and the whistle stays away.
Do I need a phone or an app?
No. Certus One works completely on its own. Just charge, pop them in and set the volume by hand. No app, no Bluetooth pairing, no account.
Are they really rechargeable?
Yes. Charge them in the included case (like wireless earbuds). A full charge lasts up to 16 hours, and the case tops them up about 4 times when you're out, up to 60 hours in total.
Are they suitable for severe hearing loss?
They're designed for mild-to-moderate hearing loss and everyday situations: conversation, phone, television. For profound loss, a prescription aid is the right route, and we'd rather be honest than oversell.
Is this a real hearing aid or just an amplifier?
A real hearing aid. Certus One is a certified OTC (over-the-counter) hearing aid for mild-to-moderate hearing loss. That is a regulated category with real requirements behind it. Cheap 'sound amplifiers' simply make everything louder; Certus's ClearVoice™ processing lifts speech and pushes background noise down, so you hear the words, not the room.
How can it cost so much less than the audiologist?
Because you are not paying for the building. A private prescription pair costs €1,500–€4,000 largely due to clinic overheads, appointments and fitting fees. Certus One ships straight to your door, fits itself with 12 ear tips, and you get 90 days at home to prove it does the job.
Does the PRSI Treatment Benefit cover this?
The PRSI Treatment Benefit contributes up to €500 per hearing aid, but only through suppliers contracted to the Department of Social Protection, and only once every four years. Certus One is a direct purchase, so it sits outside that scheme. Even with the grant, a private pair in Ireland typically runs €1,500 to €2,500. Certus One costs a fraction of that, with no referral and no HSE waiting list.
How does shipping work?
Every order is free, fully tracked and insured, and your tracking link arrives by email the moment it leaves us.
What if they're not right for me?
90-day no-questions returns. Send them back for a full refund, no hassle. Covered by a 2-year guarantee.
Try Certus One Risk-Free
Wear them through real daily moments. If it’s not right for you, send it back. We make it effortless. 541 verified customers have already made the switch.
90-day money-backUse them at home for three full months. Not impressed? Return them for a full refund, no questions asked.
2-year guaranteeCovered against faults for two full years, backed by real human support whenever you need it.
Free shippingTracking provided after dispatch.
A real hearing aid, not a ‘sound amplifier’